The 21-year-old, who has found the net on just three occasions in his last 14 games across all competitions, had a poor game by his standards as United lost 2-0 to rivals Man City in the derby on Wednesday night.
That was remarkably their seventh defeat in just nine games, and Ricky, an avid United fan, made his feelings clear on the England striker when he phoned in to talkSPORT during Thursday’s Drive show.
“I watch him every week and I don’t rate him,” he said.
“I’m not just saying that because of the stats, I’ve looked at them and have a vested interest.