Manchester United starlet Greenwood has enjoyed two seasons at the top level and selected left-back Bryan as his toughest rival so far.
He told MUTV: "I've probably got to say, it might be a surprising one, but do you know [Joe] Bryan, the one for Fulham?"He allowed me no space, no time on the ball, when we played them home and away. It was one of my most difficult games for us.
"He's one you probably wouldn't think I'd say his name, but he was getting tight to me and not giving me much space. He was a good defender and he was probably my toughest challenge."
27-year-old Bryan then replied to a post on Instagram joking: "What's he been drinking then?"