The Newcastle legend was discussing the winger's performance against Sunderland.
The veteran USA legend will leave Everton after 10 years of service this summer.
The youngster scored his first Premier League goal against Everton on Saturday.
Celtic beat Kilmarnock 1-0 courtesy of a last-minute goal on Saturday.
The two sides drew 1-1 at St James Park on Sunday.
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The West Ham United midfielder shares the family-like bond he has with the club.
The midfielder's stellar displays have earned him a call up to the France squad by Didier Deschamps.
Former Manchester United defender wants to see more displays like Louis van Gaal's side produced against Manchester City.
Alex Iwobi netted for Arsenal against Everton.