The 20-year-old hotshot has been heavily linked with a switch to the North East.
But Starsport exclusively revealed that Chelsea have joined the race for the Serbia international.
If he joins Newcastle and scores goals I don't suppose it matters what his celebration is like ... but the current one won't go down too well with Steve McClaren ... who has banned all swearing from his players.
The gesture is hardly what parents will want their kids to copy, I'm sure.
Newcastle’s other Anderlecht target Chancel Mbemba is also understood to have missed the session.
Mbemba, 20, is a Democratic Republic of Congo international and a commanding central defender.
The Toon have only signed Georginio Wijnaldum this summer.
But it’s thought a deal could be close for QPR striker Charlie Austin.
The former Burnley man has been linked with a host of clubs. Everton, Crystal Palace and Leicester are all thought to be keen.
Despite their relegation from the Premier League, it’s understood Rangers want £15m for their star man.
Magpies boss Steve McClaren is also reportedly keeping tabs on Austin’s Rangers teammate Leroy Fer.