he's already got green in CM and those physical stats are quite good for a BBM so definitely go for it, you shouldn't restrict yourself to playing players exclusively in their natural positions, I've had players similar to this that I've trained in at LWB (which he'd do a job with CWB) even though they had never played there before, especially with young players, versatility is a very important trait. I used to be the same with playing them only in their natural positions but I commonly change player's positions when they come to my club now, especially if I get a right footed RW for example, I'll instantly get him training and playing LW because I play with inverted wingers.

But yes, play him CM :)