The defender has looked excellent since the appointment of the new boss.
Tottenham Hotspur could do with a win over the Germans tonight.
Glasgow Celtic managed to get a 1-1 draw against Borussia Monchengladbach in Champions League action yesterday.
Liverpool were considering a move for the youngster in the summer.
Moussa Dembele saved Celtic again on Tuesday night with a penalty.
The Everton midfielder has been called out by his manager and even dropped from the side in recent weeks, but it seems to have worked in motivating him to improve.
Former Tottenham Hotspur recruitment chief Mitchell had been linked to MK Dons.
The playmaker has not played for Mark Warburton's Glasgow Rangers side since mid-October.
The Belgian says Ronald Koeman convinced him to stay at Everton.
Burke might have netted the club a rather substantial transfer fee, but Steve Chettle would rather see the club turn down the money in favour of progress.