Of course if a team who finished miles ahead of us, are in the Premier League ,and can offer him a lot more money have a bid accepted, he isn't going to turn them down.
Burnley have probably been informally made aware of that, and hence why they keep bidding.
All we can ask for is that if we don't accept a bid he remains loyal, committed and doesn't kick up a stink. Everything we've seen and heard suggests that is the case and that his attitude has been spot on, and that whilst he won't turn down the move, if a fee isn't agreed he's still perfectly happy at Sunderland.