Criteria to put players I the nego list

[Niddhoeggr]

I trained him a little bit and that's the current situation. Should be alright, I guess?

One more question: Am I right with the assumption that I can't sell him because I'm only manager level 5 and he would be too strong for the guys one level below (because the feature is as you all know for sure only unlocked by reaching level 4)?

Thanks and best,
Nidd