"I can see absolutely why it's caused so much fuss," Berg said.
"He is already a top, top player and he is only young. He really is that good a player and whoever he plays for in the future will get their hands on a wonderful player. I've not many, if any, as good as him at that age."
"It's a great boost for us and it's a huge relief for him because he just wants to play football at the moment.
"He loves football and he is a very good player so it is great to have him back and hopefully he can put this sorry chapter behind him.
"I have spoken to him and he is happy to play with us. I want him to just concentrate on his football and help us achieve success before looking to the future.
"I'm not sure what's happened in recent weeks so it's best that I let him focus on playing football before talking to him properly.
"He's got a contract with
"After that I don't know what's happening but the main thing is he is here until the end of the season. That would be good for us all.
"He has to decide where he goes for himself. I'm not sure who is advising him but he must go with his own mind.
"If he asks me I will tell him what I think and I expect him to at least ask my opinion.
"I had a great time at United and have fond memories with the people there. We will discuss his future and I hope he does make the right decision."