Yes he does. It's honestly a tough decision.
The easiest moves are Kawasaki, Loup or Wagner to the minors. But in reality, none of them deserve to be there. They are all playing GOOD Major League baseball right now.
Loup and Wagner have an ERA well under 2 (combined) over nearly 50 innings. Wagner is at like 0.82 ERA over 11 innings while Loup is at like 1.23 ERA over his last 22 innings (2.00 ERA total over 36 innings).
Kawasaki has a better OBP% than everyone on the team outside of Lind and Encarnacion. Yes, his OBP% is better than Jose Bautista.
Your other options are Perez, who has been good - although he is pitching the least of any pitcher right now, McGowan, and Bonifacio who are all out of options.
It's a tough choice.
Personally, I'd try to trade Oliver - see what the market is.
That's true. I'm a big baseball fan, but I don't read much from Wilner. I always heard he was good - but reading that makes me scratch my head.