Janmaat would be useless as a winger, like most fullbacks his attacking play comes from running into space from deep.
Which wouldn't happen as that space would be marked, just play an actual defender there please. It's not a coincidence in the slightest that we went on an unbeaten run towards the end of the season when he got injured.
If Anita has to play then play him at RB instead of Janmaat and drop him.