The Welshman was in fine form as Wales defeated Turkey 2-0 in a Euro 2020 group stage game on Wednesday.
Campbell told talkSPORT: "Aaron Ramsey makes amazing runs. The timings are to perfection, it's incredible. He's got a knack of getting in there.
"You need those players who can get in there. You need those guys who can smell, 'something's opening up here'.
"Turkey were playing three at the back, so Ramsey was just waiting for that gap and [Gareth] Bale found him for the first goal. He's very intelligent with those runs.
"He's working hard, he's making great runs. He's a top, top class player. Maybe he's in the shop window!
"He might take a little return to north London and see what's happening at Arsenal – you never know."