Arsenal's Per Mertesacker (L), Mesut Ozil (2nd L) and Serge Gnabry (R) attend a team training session with ex-Arsenal player Robert Pires at their training ground in London Colney September 30, 2013. Arsenal manager Arsene Wenger has told his players
Arsenal's Per Mertesacker (L), Mesut Ozil (2nd L) and Serge Gnabry (R) attend a team training session with ex-Arsenal player Robert Pires at their training ground in London Colney September 30, 2013. Arsenal manager Arsene Wenger has told his players to watch out for Napoli's quickfire counter-attacks when the two high-flying sides meet at the Emirates Stadium in Champions League Group F on Tuesday. REUTERS/Eddie Keogh

Arsenal legend Robert Pires opined that Arsene Wenger's squad lacks physical presence in front of the back-four that could mean the difference of whether or not they could win a silverware.

The 41-year-old who came out of retirement to give his decorated career a final push, joining FC Goa in the Indian Super League, believes that the Gunners' current lineup has the potential of surprising everyone despite being relatively young.

"I think Arsene Wenger has a very good team at Arsenal but I do think they need one player in midfield in the mould of Patrick Vieira," the Frenchman told Sky Sports.

"They need a tall player, a strong player because in England you need players who are physical. That position is very important and I think that is the only missing piece.

"That aside everything is good because they have some good creative players and Wenger has bought some good young players like Alexis Sanchez, Danny Welbeck and Calum Chambers."

Pires is still hopeful that his former club will be able to win it all in the Premiership, especially if they will be able to take advantage of certain circumstances throughout the course of the campaign.

"I hope we can still win the title," he added.

"Of course it is going to be very difficult, but the season is very long and the Christmas period coming up will be a very important one for Arsenal."

"The situation is not too different from when I was an Arsenal player. It was vey tough, very difficult against teams like Man United, Man City, Chelsea and Liverpool."

"The good news is that Theo Walcott is coming back but the bad news is that Mesut Ozil is out. But I still believe in Arsenal, I believe in the players and of course I believe in Wenger."

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