He's been absolutely CRAP for Valencia though, let's be fair. They have some pretty good players - Parejo, Gaya (who is just fantastic, BTW), Guedes, Soler, etc. - and he's been about the biggest problem. They've given up like 16 goals and only scored 16. The offense is the problem. He put on a deplorable performance in the cup match I watched the other day. Keep made a blunder and just GAVE him a breakaway that he completely botched. Gaya was just killing his guys on the left side and Bats was nowhere to be seen, delivery after delivery into the box.
That being said, he was a complete poacher stud with Dortmund. So go figure.