Chelsea are awaiting the review of CAS for its transfer ban, which was reviewed by FIFA and not overturned. Assuming the ban remains in play, Chelsea will be unable to make a signing until the Summer of 2020.
A situation that will end any possibility of the Croatian staying at Chelsea, with the midfielder returning to Real Madrid.
So, both Chelsea and Madrid have until the end of June to make a decision on what will happen with Kovacic, a situation which keeps changing.
Kovacic is also a player that could play a role in the exit of Eden Hazard, with the Croatian wanting to stay in London and Chelsea supposedly wanting to keep him. With Hazard seemingly now a case of when and not if he joins Real Madrid, Kovacic could be a vital part of the transfer.