Stoke are unwilling to meet their current demands, and so Coates revealed that they've been forced to look at other options.
Coates said: "Larsson is a possibility but we have to see how we get on with Jermaine first.
"We're on the case and hope we can do something.
"There's some way to go and with a bit of luck he'll stay. We'd like him to stay, that part's good - it's the other messy bit we have to sort out.
"We won't be paying £6m, it's a totally unrealistic figure from our point of view."