Exactly, shouldn't be an issue at all really. In normal life it's akin to someone handing in their notice and everyone being told and that person is leaving and then working with said person for the next 4 weeks. The only difference is Benteke doesn't know who his next employer is (or atleast he shouldn't know at this stage).
The main difference between the scenario you described and Benteke's situation is that Benteke doesn't know if he is leaving, which is the entire reason it is difficult.