This is good news, not only because his time has come (just like Matuidi's and to a lesser extent Pjanic's), but because it also means we will be forced to reinvest in and strengthen the midfield.
With Matuidi, Pjanic and Khedira gone, we only have Arthur, Bentancur, Rabiot and Ramsey as midfielders. We need at least two more signings in that department.