Who plays at Left Back?

BABU (5) has been in outstanding form since he joined, adding solid defensive play and attacking prowess to the back four. But with the TA League on the horizon, should we be giving one of our Thai left-backs a starting place, to bed them into the team? KATANG (3) was great last season and has shown signs this season of growing into a regular first-team left-back? NU (44) is back in the squad and can also fill in at left-back, doing so on many occasions last season. Who do you think should start?