Kevin-Prince Boateng has officially re-signed the midfielder.
Boateng will be with AC Milan for the rest of the season. The midfielder has been training with the Serie A team since September, with his contract with Schalke terminated last month.
And Boateng who was with Milan between 2010 and 2013, didn’t make any appearance for Schalke in 2015-16 since getting suspended in the loss to Koln back in May.
In his first spell at Milan, Boateng won the Scudetto in his debut season and amassed 10 goals in 74 league appearances.
Milan are sixth in the Serie A standings this term, eight points adrift of leaders Inter, as they prepare to host Bologna on Wednesday.