The Finland international striker began last season on a second season long loan deal at Blues having spent a successful full campaign at St. Andrew's the season before but returned to Chelsea in September to undergo a major knee operation and has only recently returned to the first team squad at Stamford Bridge.
Blues boss Steve Bruce has made no secret of his desire into trying to lure Forssell back to St Andrew's should the player be made available by Chelsea but he faces stiff competition from a host of other Premier League sides with Everton the latest club rumoured to be ready to launch a bid for the player.
Tottenham and Newcastle have also been linked with Forssell since the Premier League season finished earlier this month.