Overwhelming majority will be sell. But given Koeman and Walsh thought he was the second coming of ____. He is on a fat contract, and would be in no rush to leave. Have a feeling we'll be seeing him off the bench, regularly - perhaps to the point where he wants to leave.
To think Moshiri once dubbed him as part of a "fab 4". Blimey mate, couldn't script it for a donkey!!
e: Easier to get rid of next year anyways, as 15m would have been amortised and then the loss on sale would be minimal thus minimising effect on FFP.