Great signing for you guys. A bit about the player:
He's taken a lot of stick over the years at Forest. He's very much marmite, people either love him or hate him.
In my view the main reason he has taken stick is he is no match winner, he's played over 200 games and I can think of 3 games off the top of my head where he has made a serious impact to win a match, about 150 of those 200+ in attacking positions. He also has this annoying habit of doing pointless Cryuff turns which get him into trouble a lot.
He's played almost every position. A good thing or a bad thing? It can be both. He's incredible useful as a squad player but he was never seen here as the best in any position, but the main issue is nobody knows what his best position is and in 200+ games, that can be a problem.
The main reason people love him is his desire. Been in the Forest side for 6 years and can't recall one period where he was injured or didn't give 100%. He will give everything for the shirt and just get on with his business quitely.
My personal opinion of Ben is that he's best at left-wing back (too small for LB, too limited for LW) and I think Wilder will love him like almost every Forest manager has, but he has weaknesses in his game and hasn't really pushed on enough in his 6 years playing. At the rumoured 3-5m I think it's a great deal for both parties. A change of scenary for him could be the thing that pushes him on as let's be honest we have been in a bit of a state since he has been in the team.