Club matchpoints. Options include 3NT, 4♣ Gerber, 4NT invitational, and gadget 2♠ (club length, possibly 5-5 minors.).
Over 2♠, opener will bid 2NT with more diamonds than clubs, otherwise 3♣.
After that, 3NT would be a mild slam try with clubs, while 4♣ and 4NT would still be Gerber and invitational, but feel free to suggest better treatments.
Plus... it's free!