"I don't think they are to be honest. If you are being brutal, I don't think any of them have shown any signs," he said.
"Maybe Bruno - a new player coming in and taking responsibility in interviews, and on the pitch you can see he demands the ball and takes responsibility that way - but I don't see anybody who is going to ruffle feathers or pull someone aside and say 'listen, you have given possession away cheaply the last three times, sort yourself out'.
"Having no fans in the stadium is disgusting and we hate it but it has opened my eyes to see that there aren't many leaders playing football at the moment and Man United are suffering from that."
For Saturday's win over West Brom, Ferdinand added: "Bruno, who you don't mind giving the ball away because he is the creative spark right, but he gave the ball away very cheaply probably about four times before half-time.
"I am sitting there looking around the team thinking who is going to be onto him? Who is going to be telling him? I would have been screaming."