I don't see that honestly.
Conducting a transaction like that at the gate of your workplace.
Secondly it looks like he was on the phone when he arrived, so that is likely the distraction from him going to the gate.
Thirdly the MIB's reaction to their conversation is strange. He seems to he either a drunkard in how his head bows against the wall after their interaction or he is upset/disappointed by something.
I could well see it being like Bandage claims or close to it. MIB is a pimp and scouting for business, makes the suggestion to Deely at the gate. Deely outside work says no thanks and that's why we see the guy looking disappointed as they thought they had a customer/mugging victim all set up. Once Deely leaves work his attitude changes without the glare of your office and security and he goes looking where he was told to go.
Though as @johnnysachs states, money really holds this back from being possible. He didn't go to the ATM again when he walks right passed one in our shot. He could have had money stashed in his drawer in the office but really that doesn't seem likely.