Magath, who was fired by Schalke only three weeks ago and rejoined his former club Wolfsburg two days later, is famous for his tough training and discipline and was far from universally popular despite leading them to second place last season.
Several of his former players would be delighted to push him close to the second division as Schalke, who have won both matches under new coach Ralf Rangnick, host the relegation-threatened Wolves on Saturday.
Schalke are 10th with little to play for in the Bundesliga but according to striker Jefferson Farfan are treating Saturday's match like a final.
"The psychological pressure of Mr Magath has gone and now we are enjoying ourselves again at Schalke," the Peruvian told Sport Bild. "Until recently, a lot of players lived in fear.
"The new coach is trying to construct a relationship of faith with the players.
"The problems between Mr Magath and myself were undeniable. The time under Magath was a huge strain psychologically."
Schalke's team against Inter Milan included two players, Hans Sarpei and Alexander Baumjohann, who were banished to the reserves by Magath earlier in the season and both are expected to line up on Saturday.
"You never forget," Ghanaian Sarpei told reporters after the Inter match.
"Football is about ups and downs. I have played well under the new coach and we've won two games."
"I didn't have an easy time under Magath, but Rangnick has talked to me along and built me up again," said 24-year-old Baumjohann, who was a bright teenage prospect during Rangnick's first stint at the club five years ago but has failed to progress as expected.
"Of course, I watched the game and I was very happy for the team," he told DPA news agency after watching the Inter game.
