There are apparently " special talent "cases that can be made , not just the 75% of internationals one :Not sure how he'd have qualified for a work permit with just 6 months at Anderlecht.
"Changes to the FA's work permit regulations for non-EU players came in to effect in 2015 and were designed to allow only players who are “internationally established at the highest level” and “whose employment will make a significant contribution to the development of their sport at the highest level”.
Well I guess the PL is the highest level even if we're not , and a case could be made that he will make a significant contribution i.e. We are desperate. For me I would leave him where he is to enjoy the Champions League games , continue scoring goals and come to us in the summer a better player in a settled team . It really is desperation the way we parachute the likes of Vlasic and Sandro in , young talented players from a foreign country trying to adapt . The only reason I can see for him to come back is that it will help him next season in the PL if he's had some experience here , but not outweighed by leaving him where he is to develop for another 7 months or so .