We are talking about a nominal fee, likely far less than the cost of his wages if we then couldn't offload him. We wouldn't have triggered that extension unless we wanted him to stay and play.
I kinda think good strikers always blow hot and cold. The really good ones just have more good days than bad. I think it's probably true for Simms as well as Haji, both have the ability, it's just whether Frank can unlock it.