Martinez has said that Bayern want to test themselves against the very best that Barca have to offer.
"We already know in the dressing room who we're going to face," he told AS. "It's going to be very difficult.
"I've been unfortunate enough to face them a fair few times. It's important to press and not give them time to think. In under a second they'll score against you.
"[Messi is] the best in world and nearly of all time. We'll need to pay close attention to him. We want to be in the final and if we can beat them when they are all there, so much the better. It looks like Leo is going to recover in time and that's good news for football."
The first leg of the semi-final takes place on Tuesday night.