Perks of being a Man U legend (player). He knows the culture and he managed to lead the team for a CL spot last season to be fair to him.
It is different story: being a legend player does not equal to be a good coach. Furthermore, I don't agree to call Solsa is a legend player of Manchester United. I knew his late goal that brought a Champions League to Old Trafford in the match with Bayern but is it enough to call him as a legend player?
As a coach, he has done his job too bad. Last season, the spot to Champions Leauge has big contributions from late appearance of Bruno Fernandes. Solsa contribution is small. He did not make enough substitutions and his key players did almost exhausted in last matches. They protect their spot with luck behind.
Roma didn't technically let Cengiz Under go, he is still their player and I am sure if he plays great here they will want him back anyway, he is just on a loan right now at Leicester and when a team like Leicester from premier league wants your player, it is also a smart decision to send him there too in order to both gain reputation, more price, and also maybe even get better as well, I think premier league is a far superior league then serie A, and Leicester is in a lot better shape.
However one thing I don't know about is fee clause, if there is a fee clause like 20-30 million euro or whatever it is, Leicester may just exercise that and get Cengiz without trying too much, which most loans have nowadays but if that is not the case this will end well for Roma.
Cengiz Under is a talented player and he grows too good in Roma but his career was broken with injuries. I don't know in the long time Cengiz can play good in Premier League. There are few players do well in first matches (Ozil, Morata) but they failed gradually.