Carney is more disturbed that criminals are aware of his side business selling stolen goods than he is by the possibility that Montague’s men associate him with Freddie, who was certainly involved in the heist. To be known to crooked men as a potential accomplice calls Carney’s identity as an honest businessman into question. That Freddie has roped Carney into his scheme despite his cousin’s unwillingness demonstrates Freddie’s untrustworthiness. It is worth noting that Carney, though furious with Freddie, does not throw him out of the shop, speaking to their familial bond.