The Portuguese boss recorded his first win in charge of the Red Devils in the Premier League yesterday with a 3-1 win over Bournemouth.

The victory was satisfying enough for the new manager, even if this was a victory achieved against a side who looked a shadow of the vibrant team that enjoyed its first season in the top-flight last year, and there was no shortage of other positives for Mourinho to focus on.

Most notable was the performance of two of his four high-profile signings with Zlatan Ibrahimovic continued his remarkable record of scoring on his league debut — the striker has now scored on his first appearance in La Liga, Serie A, La Ligue, the Champions League and the Premier League — and Eric Bailly looked impressively solid at the heart of the back four.

There were also a telling, if the inconsistent contribution from Wayne Rooney, who added the second goal, while Juan Mata, restored to the starting line-up just a week after he was humiliated at Wembley after finding himself a substituted substitute, scored the important opening goal five minutes before half-time.

And it seems United’s impressive win over the Cherries has been down to Mourinho’s strict regime off the field. According to The Sun, Mourinho has had partition built at the club’s training ground to separate his first-team stars from the rest of the squad.

Mourinho is keen on building a close-knit group and doesn’t want interference from people who don’t fit into his plans.

He has already understood to have told several stars they won’t feature under him, including Bastian Schweinsteiger, Andreas Pereira, and Adnan Januzaj – with the latter recently completing a loan switch to Sunderland to join up with Donald Love and Paddy McNair.

Mourinho’s treatment of Januzaj by forcing him to train with the reserves is said to have forced him into leaving.

The report claims those that have been outcasted by Mourinho’s actions are frustrated and morale inside the camp is low.

Pereira is understood to be pushing for a loan move in order to earn regular football, while Schweinsteiger his attracting interest from European clubs