Swansea v Sunderland: It's child's play for Johnson and Cattermole The Black Cats' new winger has known their captain since they were 10-year-olds and they've played together before at Middlesbrough Scary! O'Neill loves watching Johnson ghost past defenders PA Lee Cattermole has been told he will be prime suspect if Adam Johnson goes down under friendly fire. After an impressive debut in the midweek cup stroll against Morecambe, Sunderlandâs £10million capture from Manchester City has been turning on the style in training. Midfield minder Cattermole has not been the only one left to chase shadows by his pal and former Boro team-mate - who he has known since the age of 10. Fierce competitor Catts often leaves Martin OâNeill wincing as the tough-tackling skipper takes revenge on anyone who dares to leave him looking foolish with a touch of training ground trickery. And the last thing the manager wants is for England star Johnson â who makes his Premier League debut for the Wearsiders at Swansea on Saturday â to get crocked by one of his own. Black Cats' boss O'Neill said: âThis week in training, Adam turned his mate Cattermole, and I was delighted that Lee didnât swing a leg at him in response. âAdamâs a quiet lad off the field, but I do use those words advisedly because I know heâs good friends with Catts. Of course if Adamâs form dips in any way, then Iâm immediately blaming Lee. âGetting Adam here is a coup, heâs a genuine joy to watch â he just ghosts past players.â Johnsonâs arrival could leave Seamus McDonagh out of pocket -Sunderlandâs goalkeeper coach insisted heâd fork out good money to watch the 25-year-old play. OâNeill added: âSeamus did say that heâd pay to watch Adam, so we might ask him to pay the admission in the next game.â Steven Fletcher should also make his Sunderland league debut at the Liberty Stadium, with the former Wolves and Burnley striker bidding to thrive on the service provided by his fellow recruit. Johnsonâs arrival has brought the best out of rival wingman James McClean, who netted both goals against Morecambe. OâNeill added: âI genuinely feel we are a threat down both flanks and thatâs good news. Iâm excited because weâre capable of creating something.â