"So my message to Manchester United fans is don't be too influenced by this talk that we need this midfield player because I think the boys can cope."
Robson helped announce the new deal with Aeroflot at Old Trafford alongside Andy Cole with the first-team squad and manager Moyes also in attendance.
"I think you've got to ask David Moyes what he thinks about where the squad maybe needs tweaking," he added during a press conference. "One thing he's done great, so far, for United fans is no-one has gone out of the door.
"If you look at the squad we've got at this moment in time, it's a healthy squad with a great chance of retaining the championship next year."