Chelsea striker Diego Costa could face retrospective action despite denying accusations of biting Evertons Gareth Barry during Saturdays FA Cup quarter-final at Goodison Park.The Spain international was shown a yellow card early on in a 2-0 defeat for a foul on Barry and in the 84th minute, the pair clashed again after Costa retaliated to a challenge by the former England international.Costa pushed his face into Barrys neck and motioned as if to bite, but appeared to withdraw at the last moment and then embraced his opponent, who did not react. Referee Michael Oliver pulled out a second yellow card, followed by a red, as the Brazilian-born forward was sent off for the first time in his Stamford Bridge career.Costas denial, and an admission of regret, came late on Saturday through a Chelsea statement, which read: Diego spoke to club officials after the game and expressed regret over his reaction to the challenge from Gareth Barry that led to his red card, but Diego was also very clear that he did not bite him at any point during that altercation.Barry was dismissed minutes later for a second booking in a separate incident. Costa (c) is shown a red card by referee Michael Oliver during the English The FA is waiting on a report from Oliver, who was confronted by Costa when he sent the player off, but officials have told Sky Sports News HQ they are aware of the incident and are looking into it.Oliver will submit his match report within the next 24 hours and any decision to charge Costa would be made by the FA on Monday.Guus Hiddink and Roberto Martinez both shrugged off questions about the altercation at their post-match news conferences. Costa and Seamus Coleman compete for the ball I try to be fair in my judgement, I havent seen it and it is difficult for me to say yes or no, said Hiddink. Without seeing, I dont want to give judgement on this.(Costa) was chased a bit in the game. They went after him. They knew it. It is within the rules.As a referee, you must protect the situation but knowing and feeling the atmosphere - then comes the moment that I would like to give judgement (on) but I havent seen it.Hiddink was asked whether Costa should seek help for anger management and jokingly made reference to the 2003 film of the same name. Costa (1st L) of Chelsea walks off the pitch past Hiddink (2nd L) after the red card There are movies about that, I think, the Dutchman added. One movie with Jack Nicholson. Maybe we go and watch it together.I like him still going towards the edge but you also have to take into consideration he was desperate to play today.It would have been better to rest him but it is not the type of game you rest players.It is all the combination; not fully physically fit and all the provocations and he has to take responsibility for the incident.Everton manager Roberto Martinez, who was grateful to two moments of brilliance from striker Romelu Lukaku before the red cards to settle an otherwise disappointing tie, played down the incident. Everton manager Roberto Martinez felt the referee was right to send off Costa and Gareth Barry My interpretation is I dont think it was a key moment. It was an emotional game and rightly so, said Martinez.Diego Costa had a fighting spirit and I would like to praise the referee. The sending-off of Costa was right.The sending-off of Gareth Barry was right and the referee never allowed those emotions to stop the fluency.Whatever happens with Diego Costa, I am sure the two players shook it off. From where it was, he moved his head towards Gareth Barry and I lost sight of that action.I thought it was a second yellow. It was a moment that didnt have an impact on the scoreline.Martinez rejected the suggestion his players had targeted Costa.It is part of trying to do an interpretation as you want, he added.We matched each other well. None of my players fell into the focus of losing the game.Also See:Lukaku double ousts ChelseaFA Cup talking pointsArsenal v Watford previewMan Utd v West Ham previewETwaun Moore Jersey . -- Peyton Manning will have all of his wide receivers available for the first time in a month when the Denver Broncos begin their playoff run Jan. ETwaun Moore Pelicans Jersey . 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"Jeff is a hard worker who was an important special-teams contributor for us last season," said Stamps GM John Hufnagel.It took Tim Cahills son to finally convince him to come home.The Socceroos legend was unveiled by Melbourne City as their new star striker on Monday, saying the move to the A-League club felt right from when negotiations began months ago.But Cahill, ever the family man, said it was a text from 11-year-old son Shae that made up his mind to leave Chinese Super League club Hangzhou Greentown and make Melbourne his next destination.Wed beaten (Chinese club) Yanbian 4-1, we were away on an eight-day tour, Cahill said.I was sitting next to (Socceroos team-mate Matthew) Spiranovic and my little boy just said to me, Dad, its not the right move for my football if we stay in China.That was it.I said `its over. I closed talks with Greentown. They could have thrown everything at me and they didd.ddddddddddddCahill ends an 18-month stay in the Chinese Super League to join City.After winning the Asian Cup with the Socceroos last year, he joined Shanghai Shenhua but had his contract with the cashed-up club terminated a year later, then joining Hangzhou Greentown where he made 17 appearances.Cahill suggested it would have been the easy option to remain in China, but the added motivation of playing in Australia would continue his long playing career.As a footballer you can sometimes stay in China and coast through it, he said.This is going to give me a good challenge.Ive always been a player that needs that bit of pressure and needs that next kick. ' ' '