Thing is mate every year Kiev will basically qualify for the CL from that league now that Dnipro have collapsed, so in theory they could use keeping hold of him for a CL run as an excuse to never sell him every season. They know they can't win the thing - there big goal was to try qualify through the group stage and that was achieved - now its just a matter of if City knock them out or if someone else does - they obviously have zero chance of winning the thing.
As a club they are reliant on players who sign for them with the expectation of being allowed to move on should a big team or big offer come in for them, else no player would go there - they are a stepping stone club in a stepping stone league for promising players - showing a total unwillingness to sell when those offers come in will give them a nightmare in both recruitment and getting players to sign extensions in the future, Shaktar operate the same way and every year their star players are allowed to leave when the big enough offers come in - its hjust the rality of football over there.
A 20m Euro bid or whatever this is, will be seen as a triumph by the owner and the fans - they got to keep him for the CL groups and qualify - got him to resign a new deal to ensure the fee and then got a much larger fee than they would have in the Summer - as far as it goes it doesn't get much better for Surkis than that scenario - he comes out looking like a superstar and very good businessman in all this and also then looks to be the man who honours his promises by letting the player move after all.
Martinez has a lot of form for pursuing a player he REALLY wants until he gets him to sign - Lukaku, Deulofeu, McGeady (Shudder), McCarthy all point to that