Judging by Leon's expression, Rosvisser could guess which "perfect candidate" he was thinking of.

But...

"He’s not only got a grudge against the Empire; he’s got a pretty big one against you too. Are you sure he’ll help us?”

Leon considered this for a moment. “Last time I went to him for intel on the Empire, he insisted we weren’t allies. But I believe, given the chance for revenge against the Empire, he’ll take it.”

Constantine might be a bit hot-headed, but he was also pragmatic.

Revenge against the Empire outweighed his feud with Leon. After all, finding Leon would …