Watford rejected 30m for him in the summer and since then he's signed a new 5 year contract. He'd cost an absolutely mental amount of money for a decent/ok player.
The thing that concerns me is that with most other players we saw patches of what they could actually do the past 2 years. Coleman's literally had a couple of good games in amongst all the average performances. Hopefully Koeman will sort him out though.
The last 18 months he's been really frustrating to watch. He's contributed next to nothing in an attacking sense. Every time he's got the ball the past 2 seasons he's passed the ball backwards, he never runs with it anymore.