I like Marcus McGhee a lot. He'll almost certainly be a bit out of his depth against Yan but you can be sure he'll give it a good go.
And yeah, I think he does deserve it in a way. He's had a wild life, put on some entertaining fights and deserves a crack at one of the top dogs before he's over the hill. I see it as a great reward for him and I think the fight will be a fun watch.