Craig signed a pre-contract agreement with Hibernian last month and Saints rejected a bid to sell the player in January.
But the former Falkirk midfielder hit two goals last month to show his upcoming summer move has not affected him and Maybury expects his former McDiarmid Park team-mate to be his usual determined self on Monday night.
Maybury said: "I find it a little strange that you can sign a pre-contract in the same league but they are the rules.
"I know, once it was announced, it was a big relief for him and he has scored in most of the games since.
"So it has obviously not affected him. I presume he will play and there won't be an issue.
"He is kind of damned if he does and damned if he doesn't. That's part and parcel of it.
"I'm sure he will do the best he can for St Johnstone, there is no other option.
"Hibs fans will see that he does his best for his team and come the summer he will be a Hibs player and he will do the best for us.
"We have got to be wary of him, he is not afraid to have a shot."
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