Where will Alexis Sanchez end up by the end of January?
What appears abundantly clear now is now is that the Chilean will be departing Arsenal.
Manchester City and United are both in the hunt to acquire his services, while there have also been rumblings from Stamford Bridge that Chelsea are keen on signing the attacker.
An exchange involving Henrikh Mkhitaryan going the opposite way to Sanchez has been touted in order for United to get the deal done.
Arsenal and the player himself have a decision to make, to which one of their rivals will they sell their prized asset as his contract runs up in the summer, meaning he could move on for free, as does potent attacker Mesut Ozil’s.
The choice is difficult to make, considering all factors. Should he decide to sign for Chelsea, there is the lure of remaining in London, whereas City look almost certain to run away with the title, meaning a Premier League medal would be secured for Sanchez for the first time since his arrival to England in 2014.
There is, of course, the deciding factor of what manager the player wants to play under.
The question of Jose Mourinho or Pep Guardiola is one which sparks fierce debate in football.
Watch Rio Ferdinand explain in the clip below why he would choose his former club’s biggest rivals over the Old Trafford side.