Damien Duff could be coaxed out of international retirement to return for Republic of Ireland's World Cup qualifying campaign, according to Marco Tardelli, the side's assistant manager.

The Fulham winger called time on his 100-cap career following Ireland's last match of Euro 2012 and vowed never to return for his country.

Tardelli plans to speak to the winger once the matches with Kazakhstan and Oman are out of the way, though, in the hope that he can change the player's mind. The plan is to get Duff back in time for the next qualifier against Germany.

"I know he has said he has retired but I hope he will be back for the Germany game. It is possible," said Tardelli. "I don't know if he will or not, but I always see him during Fulham's matches and I think it is possible, why not? He is a very good player. He said he has stopped but I hope he will come back."

Ireland will try to put their Euro 2012 disappointment behind them this Friday by starting their World Cup qualification campaign with a win in Kazakhstan. Three defeats in Poland have led to questions about the future of head coach Giovanni Trapattoni, who is already without Darron Gibson after the Everton midfielder refused a call-up because he was disappointed with his failure to play during the European Championships.

"Giovanni is full of enthusiasm, just like he was the first time I met him," said Tardelli. "I don't understand why Giovanni is [being criticised] because he achieved good results."

The return of Duff would likely abate that discontent for a short time but the future is at the feet of Sunderland's James McClean. The winger could make his first competitive start for Ireland in Kazakhstan on Friday. He has already started a friendly, against Serbia last month.

"After his 90 minutes against Serbia, his position was clear," said Trapattoni. "Maybe in Kazakhstan McClean will play up with the two strikers. That is not a problem for him.

"The position is different [to where he usually plays], but he can also play there. We will wait and see what the condition of the other players is but he could play there."