Which centre back do we sign?

With the coaches wanting more cover at centre back, we took a look at 4 trialists tonight in the game vs Pathumthani University. MON is highly rated by the coaches and has done well recently in training, OAT looked like he was signing for a rival club, however with that falling through he’s back looking for a spot in the squad. PEE is somewhat of an unknown entity, who didnt look out of place tonight and is certainly an imposing character. The surprise of the night came with NUANG trialing, but this time as a defender … he must be said he looked competent. Who do you think we should sign?