A loan is fine by me. I think we need an extra midfield because Marchisio is injured again and might lose more of the season, than we expected and Khedira is not quite reliable either.
Bentancour can be our long time plan, but we shouldn't rush and risk choking him.
So a loan would give us the extra tactical options now and after the situation is settled, we decide what to do next.
A but of those proportions though, would be a mistake!