There is definitely a good player in Merino, but I'm not sure he's quite at the point of commanding a starting position in the prem, but he needs game time to get there.
I don't knowmuch about Ki but he has been a regular in the prem over the past four years, and is likely a safer option. It's a shame for us, but it would probably be best for the player. Although a loan option would suit both parties.