I'd have Mirallas personally. I see what you're saying though. I like Lookman as an impact sub. Don't think DCL offers much to be honest, not yet.
We say this stuff but you actually like the IDEA of Lookman.
DCL has done much much more in his short time, Lookman he looked tactically and positionally inept, but fast and fun so the idea of bringing him on is exciting.
If he does go on loan I will be gutted but again I think I'm gutted at the losing the idea of Lookman, rather than what he actually does!