In a perfect world, we'd move Markov instead. Diaz is young, will probably be cheaper and we can use him as a 2nd/3rd pairing guy.
They are giving us basically the same quality of play and Diaz is just coming back off an injury.
I think Markov is still better on the power play, I would consider moving Markov instead of Diaz though between Diaz's price and mobility. Honestly I think both are going to be eclisped by Beaulieu sooner or later, if he's not in prison.