He's still pretty young. Dropped off the radar for a couple years after Anzhi bought him for a big fee (and immediately sold him back to Dinamo) but he was very highly rated not too long ago, he's been decent for Russia in the mean time too.
Think there might be something in this, Kokorin is just too random a name to be linked to us twice now. We need a CM probably even more but I think he could still help us by taking minutes off of Giroud while hopefully offering more than Sanogo and being more reliable than Theo.