Club hoping to ward off interest from Arsenal and Manchester United.
Stoke have told Premier League clubs they will have to stump up with £15 million if they want to secure the signature of Asmir Begovic according to The Telegraph.
The goalkeeper has been in great form this season for the Potters and has been linked with a number of top Premier League teams.
The likes of Arsenal, Manchester United and Chelsea are all rumoured to be preparing summer bids for the Bosnian.
Stoke have accepted the player is likely to move on this summer but are hoping to instigate a bidding war than could see the player’s fee rise over the £20 million mark.
Begovic is keen to play in the Champions League but is reluctant to sacrifice first team football to achieve it.
That may prove to be an obstacle to a potential move to Manchester United, who signed Spanish goalkeeper David De Gea just two years.
Arsenal could then step in for the player as boss ArseneWenger is keen to bring in replacement for current Emirates number one Wojcieich Szczesny.
The Polish goalkeeper has committed a number of high profile errors this year and the club are keen to bring in competition for the position.
The club’s place in the Champions League next season is far from secure though as they currently lie 5th in the Premier League table.
Stoke already have their replacement for Begovic having signed young England goalkeeper Jack Butland during the January transfer window.