If they offer 1,000,000 or above its a no brainer as we would have made profit, I like walker its just I dont think Sisu would keep him around if an offer where we make profit comes in, especially if he is going to be 4th choice.
I reckon if he does go, we look at the Prem for a young quick loanee, for example the likes of Aaron Connelly at Brighton, Anthony Elanga of Man utd, Nathan Tella of Southampton, or we go for a player already out on loan such as Hugill (not quick but a good striker) talks of him getting recalled, potentially Ryan Longman on loan at Hull from Brighton (2 goals 2 assists) winger but can play striker and Im sure we could use him at times in AM.
But anyways, its a non-starter as they cant afford it
edit : also our top scorer last season with 8 goals