Everton midfielder Ross Barkley claims Roberto Martinez is a more tactical manager than previous boss David Moyes.
Moyes is coming under increasing scrutiny as Manchester United's disappointing season comes to a head in the next week with Wednesday's vital Champions League second leg tie against Olympiacos followed by the derby at home to City on Tuesday.
Barkley's comments, coming after Toffees under-18s coach Kevin Sheedy criticised the Scot's lack of interest in the youth team during his time at Goodison Park, only add to the growing focus on the Red Devils boss.
"Roberto Martinez has come in and given everyone confidence. He's a positive man and doesn't say anything negative," the 20-year-old told Match of the Day magazine.
"He's similar to David Moyes as they both like to take over the training session and be the main man but Martinez is more tactical.
"We do a lot more tactical work which is good for me because I'm young and still learning."
Barkley has become an integral part of the work Martinez has done at Everton and that is reflected in his statistics.
The England midfielder has already made more Premier League starts (18) this season than his total number of appearances in his two years under Moyes.
Martinez is benefiting from having a more mature player who was allowed to spend most of last season on loan at Sheffield Wednesday and Leeds but the way he has embraced the youngster's talent should not be under-estimated.
The Spaniard has regularly praised his squad for the way they have adapted so quickly to his methods after he replaced Moyes in the summer.
His brand of attractive passing football has won many plaudits and the transition has been so smooth the Toffees were in the running for the top four for a long time, although now they are realistically setting their sights on the Europa League as they currently sit nine points adrift of Champions League qualification in sixth.
"I always said that to have the dressing room we have is a real honour and privilege," Martinez told the Barclays Premier League Podcast.
"Everyone has been keen to understand what is needed for the team and been open-minded in how we want to play.
"We are ready to finish the season as strong as we can be due to the attitude of the players."