Chelseas defensive prowess of late has been typified by David Luizs resurgence under their new formation, according to Jamie Redknapp. A 3-0 loss to Arsenal prompted manager Antonio Conte to rethink his tactics, and Chelsea now sit fourth in the table having picked up four wins and four clean sheets in the Premier League since opting for three centre-backs.Luiz has played in the middle of Chelseas defensive trio during this run, most recently their 2-0 win at Southampton on Sunday, and Jamie Redknapp admitted the Brazilian has transformed under Conte. Graeme Souness says Chelsea produced a near perfect away performance in their win over Southampton There is a hunger about this Chelsea team, said Redknapp. The manager has brought that in and the players are buying into it.Every single player on that pitch is working hard and theres a desire about them again. Conte has got them so well drilled. Everybody knows their job when they have the ball and it suits them defensively as well.Luiz looks - Im scared to say it - like a serious defender. Youve got him buying into it as well, and that was a problem for Chelsea for many years. But when hes like that, he looks the real deal. Southampton 0-2 Chelsea highlights Questions were asked as to where Luiz would fit in following his Deadline Day move from Paris Saint-Germain, with even Conte admitting that he was a surprise purchase.However, Luiz has started the last eight games for Chelsea in all competitions, benefiting from John Terrys ankle injury which he sustained against Swansea in early September.During the match against Southampton, Sky Sports Gary Neville said Conte is finally getting the best out of Luiz by playing him in a back three. Antonio Conte believes Chelseas hard work is paying off after they secured another victory and clean sheet in their Premier League win over Southampton Neville added that the change in Chelseas overall mentality is noticeable, highlighting Luizs diversion from playing it out from the back.This Chelsea team have not made a mistake today, theyve not put a foot wrong, said Neville. The concentration and focus is there but the clean sheet mentality is the big thing for me, and its there right through the team these past few weeks. Watch NOW TV Watch Sky Sports for just £6.99. No contract. Even Luiz is kicking it into the stand when two years ago he might have done a Cruyff turn and tried to beat the attacker.Playing three centre-backs is very much the Italian way, but Conte originally appeared reluctant to implement the tactics he used in Italy when arriving in England this summer. Luiz has started every match since John Terry was injured in early September However, Chelsea have settled into the new formation comfortably and are now reaping the rewards, sitting one point behind league leaders Manchester City - who are ahead of Liverpool and Arsenal on goal difference.Chelsea have defeated both Manchester United and Southampton recently despite having less possession, but this new style may not be appreciated by everyone, according to Graeme Souness.They play a brand of football which wont be everyones cup of tea, Souness said after the Southampton match. But that was a near-perfect performance away from home. Chelsea boss Antonio Conte embraces Diego Costa after the win against Southampton No one comes to Southampton and has an easy ride, but Chelsea nullified them and limited them to just one shot on target. It was a very impressive performance.Theyre happy with that back three - a back five when they dont have the ball - to sit there and say come on, show us what youve got, and theyre dealing with whatever is being thrown at them.Its counter-attacking football and thats very Italian, and when I played in Italy, we would be shocked after losing games 1-0 despite having most of the ball. Thats the feeling teams will have when playing this side. Also See: Soton 0-2 Chelsea As it happened Chelsea video Chelsea fixtures Nike React Shoes Uk . Detroit and Boston are deadlocked, 1-1, and Tigers manager Jim Leyland could be forgiven if he was caught rationalizing instead of dissecting how his club could blow a 5-1 lead late in Game 2. Cheap Nike React Uk . 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LONDON -- The English Football Association fears that Britains exit from the European Union will make it harder to win bids to host major tournaments.Although only half of the 55 members of European soccers governing body are in the EU, FA chairman Greg Clarke is concerned that England might find it tougher to build alliances as a result of the Brexit vote.England failed with bids for the World Cup in 2006 and then 2018, but did win the right to host the semifinals and final at the first continent-wide European Championship in 2020. Europe might have to wait until 2034 to be in line for another World Cup after Russia in 2018, but England could target a full European Championship before then.Clarke said he was mulling what Brexit does to our chances of a future tournament as he flew back from Englands first qualifier for the 2018 World Cup in Slovakia on Sunday.Can we count on EU support or will they vote for EU nations (for tournaments) in the future? I dont know the answer to that, but we have to get to the bottom of that, Clarke said.We have to build relations directly within UEFA now and not rely on the support of the EU nations because they might say weve got an EU member who wants it this year. So its doubly important to have really strong relationships in UEFA and FIFA and Im going to be working hard at that.The FA might have to slightly change our tactics for getting a tournament, Clarke said.It might be jointly hosted with an EU member, he added of a potential bid. We are thinking about those things.Clarke was speaking at an event hosted by football anti-discrimination group Kick It Out , whose chairman Herman Ouseley spoke out about discriminatory incidents in Britain since the divisive EU referendum in June when 52 percent voted to leave the 28-nation bloc.The more immediate impact of Brexit, once Britain formally triggers the two-yeear countdown to leave the EU, will be how any new visa and immigration system affects the flow of foreign players into the English Premier League.ddddddddddddWe know what the threats and what the opportunities are, Clarke said. We will move to engage our partners in Europe and the government and the agencies and others to make the best of it for English football.Clarke started as FA chairman last week. Here are other issues he touched on at his first media briefing:---ENGLAND TEAMClarke is scrubbing the firm target set by predecessor Greg Dyke that England must emulate its 1966 World Cup triumph in 2022.England exited Euro 2016 with a humiliating round of 16 loss to Iceland, leading to Roy Hodgson being replaced as manager by Sam Allardyce.Im not going to put pressure on Sam and say we are going to win this tournament or that tournament, Clarke said. But I want to see a competitive team.So the clock counting down to the 2022 finals in Qatar could go from the England team headquarters.That clocks daft, Clarke said.England made a winning start to World Cup qualifying, scoring in stoppage time to beat Slovakia 1-0 in Allardyces first match in charge.---ROONEY RETIREMENTEngland captain Wayne Rooney announced last week that he will retire from international duty after the World Cup in Russia. Clarke hopes he changes he mind.I note that (Argentina captain Lionel) Messi retired and then decided to come back again, Clarke said. If you are good enough, Sam will pick you. So if (Rooney) changes his mind, if he has a good World Cup and Wayne thinks to himself `I fancy a bit more of that and Sam wants to pick him, why wouldnt he (continue playing)?---Rob Harris at www.twitter.com/RobHarris and www.facebook.com/RobHarrisReports ' ' '