This is a must in the contract.
On the bright side, if there is some truth to this and the Jays end up signing him, he should come much more inexpensively after that s*** season he had last year; and up until then, he was an above average pitcher. Maybe he turns it around.
That being said, I hope this is just a BS rumour. Putting aside the loss of the draft pick (which sucks, all by itself), Gallardo is a pitcher who is trending the wrong way; his K rate the last three seasons compared to earlier in his career in Milwaukee, for example.