Sead Kolasinac and Shkodran Mustafi are both part of an ongoing revolt against current Schalke 04 manager Christian Gross, according to reports in Germany.
According to ESPN's Derek Rae, several German sources are claiming there is a revolt currently in the Schalke camp against Christian Gross.
The report claims that the players are very unhappy with the way that Gross has set up the team over the last few weeks, also being frustrated with his tactics, training methods, the tone he uses whilst speaking and instructing them, and also how he tends to confuse the players' names.
Leading German news agency Bild have claimed that the players that are leading the rebellion are Kolasinac, Mustafi, and Klaas-Jan Huntelaar, three of the most experienced players at the club.
Despite this, Schalke have formally denied that there is a revolt going on, and have also stated that there have been no internal calls to sack Gross.
Schalke are in utter disarray right now, sitting at the bottom of the Bundesliga with an eight-point gap between them and Mainz 05, and the latter have a game in hand as they play on Sunday.
Kolasinac and Mustafi only joined Schalke from Arsenal in January, and it is very surprising to see them at the forefront of the rebellion, with this being a very risky way to change things at the club.
Despite the reports, both of them were in the starting eleven against VfB Stuttgart on Saturday, as Schalke were thrashed 5-1, with Kolasinac getting a consolation goal after a disappointing performance.