I think we're starting to see the old Mitoma back with Lamptey behind him. He is at his best when he has a full back behind him that's also asking questions of the opposing.
For large parts of this season, Mitoma has been doubled up on and Pervis (and the rotating cast of back up LBs) haven't really helped him in the way Lamptey has of late. Sure, it's less defensively sound, but the opposition full back has to deal with Mitoma AND a potential overlap from Lamptey, which is creating more space again
Worth having a look at Mitoma's reaction to the Chelsea goal on Saturday – from the one minute mark here – essentially telling everyone to keep calm and possibly reassuring Bart at the same time.
The whole video is bound to be helped by a massive spike in Japan, but he certainly had a good game against Todd's boys!
Edit: another touch of class at the end. He shakes the hands of two of the three officials and doesn't interrupt the third one who is already engaged with someone else. He then remembers to go back to that guy to shake his hand about a minute later.