UTG bets 7bb

Multi-way Flop | 3-way: CO | 100bb effective | Difficulty: Tough

Players in hand: UTG, Hero (CO), BB

Hero hand

A♥K♠

Board

7♣5♦3♥

Action so far:
3-way pot 11bb on 7♣5♦3♥
UTG bets 7bb

Pot: 11bb   To call: 7bb

Villain range: UTG cbet 3-way on dry low board: 77, 55, 33, overpairs, AcXc occasional bluff

Your move: