My mate Jay(OTT) is trying to say even with a crunch you will not beat him. This is almost 10% true. And that as a result you should consider if the tiny chance of beating him in the cup is worth throwing your most likely very good chance of winning your league and making it to ABBL.
I would suggest if you have a easy game this week you can rest your key players do so but do not decide if you will crunch or not based on what he does in his league games.