The Royals defender, a former team-mate of Graham at Watford, will not be resorting to any on-field banter or mind games.
He said: "I played with Danny for a few years and he is a talented striker - we need to keep him quiet.
"He has done great there and I'm sure he'll want to carry on from that.
"It was always pretty even in training - he can definitely find the net. You can't get in his head, but I don't play like that anyway."