A5s best way to play this?

pokerstars - 500/1000 Ante 125 NL (6 max) - Holdem - 6 players

SB: 54.96 BB (VPIP: 52.94, PFR: 19.12, 3Bet Preflop: 6.06, hands: 68)
BB: 55.63 BB (VPIP: 17.65, PFR: 10.29, 3Bet Preflop: 6.45, Hands: 68)
UTG: 79.32 BB (VPIP: 27.78, PFR: 16.67, 3Bet Preflop: 17.65, Hands: 37)
Hero (MP): 75.24 BB
CO: 129.24 BB (VPIP: 33.33, PFR: 15.38, 3Bet Preflop: 5.88, Hands: 40)
BTN: 55.1 BB (VPIP: 25.93, PFR: 22.22, 3Bet Preflop: 9.09, Hands: 29)

6 players post ante of 0.13 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.25 BB) Hero has 5s As

fold, Hero raises to 2.5 BB, fold, BTN calls 2.5 BB, fold, BB calls 1.5 BB

Flop: (8.75 BB, 3 players) 2d 6h 5h
BB checks, Hero bets 4.72 BB, BTN calls 4.72 BB, fold

Turn: (18.2 BB, 2 players) Jc
Hero checks, BTN bets 16 BB, ???

what would be the best line to play this?

Second bet or check fold, you should not check call.