Depends how much we want him doesn`t it ?
Probably offer the £250k , wth further payments if he plays a buch of games for us.
On the other side of it, maybe they are happy with the £250k as a selling price, but are asking for the further £150k to settle up his contract ?
If so, he could write that off IF he wants to come here badly enough.
All these figures flying around. Tip of the Iceberg !!