TAKORADI, Jan 30 (Reuters) - Kolo Toure is doubtful for Ivory Coast's African Nations Cup quarter-final against Guinea because of the groin injury that forced him to miss Tuesday's group match, coach Gerard Gili said on Wednesday. The Arsenal defender injured his groin last week in a 4-1 demolition of Benin and had to pull out of the Mali game, which the Elephants won 3-0 on Tuesday. 'Kolo is now back in the squad,' Gili told a news conference at the team's hotel in Takoradi. 'He has trained with the others today but had specific exercises to do. We'll know better later this week if he is fit to play.' If he is not fit, Toure would be replaced by Benfica's Marc Zoro, who deputised against Mali. Ivory Coast take on Guinea in Sekondi on Sunday.