The former Liverpool star doesn't appear to be the biggest fan of his old boss.
The VfB Stuttgart defender's release clause has just come into play.
Stuart McCall has said his main focus is on the play-offs and not his fate after Sunday.
The former defender was released by Sunderland in 2013.
The Italian has worked his way through four managers at Leeds United already.
The Tigers were relegated on the last day of the season after they failed to beat Man United and Newcastle beat West Ham.
Newcastle United signed Ayoze Perez from Tenerife last summer.
Derby County had appeared to be on the verge of announcing Paul Clement's appointment, but Sunderland are reportedly preparing to swoop.
Alex McLeish has said the players with the most bottle will win the play-off final as Rangers and Motherwell prepare to face off at Ibrox.
WWE officials are reportedly interested in bringing former TNA World Champion AJ Styles into the fold.
Manchester United boss Louis van Gaal doesn't have a place for Nani in his squad and Juventus could look for a special discount.
Roma are believed to be considering a bid of just under £30 million from Chelsea for defensive star Mehdi Benatia and will find it hard to resist.
Italian newspaper Tuttosport believes that Inter won't be willing to accept a part-exchange deal of Roberto Soldado for Fredy Guarin.