Manchester United manager Louis van Gaal has refused to rule out the possibility of signing goalkeeper Victor Valdes.
Manchester City boss Manuel Pellegrini says he is confident that England goalkeeper Joe Hart will sign a new contract.
The 21-year-old completed his medical on Monday morning and has signed a two-and-a-half-year deal with the Sky Bet League One promotion chasers.
Dicko finished last season at Molineux, scoring once in four outings, but could not prevent the club from dropping out of the Championship.
The former Blackpool and Rotherham loanee failed to find the net in nine appearances for Wigan.