Can't hurt!
Dibble is in love with Lackey by the way... so, on the off chance he signs, Dibble will be slurping him every chance he gets.
I wouldn't go over 9-10 million a year for Lackey. He's on the wrong side of 30, and by the end of his contract (most likely 5 years) there's a great chance he won't be worth his contract any longer.
Having said that, I'd welcome him with open arms.