Ralf Rangnick is adamant his new sports psychologist can help solve the Manchester United 'puzzle'.
The German has brought in sports psychologist Sascha Lense, who he worked with at RB Leipzig.
The move caused a stir in England, but Rangnick insists the presence of Lense could be vital to United taking the next step.
"I wouldn't say I was surprised," Rangnick told Sky Sports. "I know from Germany there are quite a few clubs who do not work with a sports psychologist. But, for me, it is absolutely logical.
"Every club has different experts for goalkeeping, for physical performance, for different areas of the field - defence, midfield, offence. The team of experts at some teams is probably bigger than the number of players in a squad.
"If you then consider the brain, the head, the way players, staff members or coaches think is the most relevant one, then for me it is only logical to have the best possible expert from that area in your staff.
"This is what it's all about, to help the players think the right things and not think the wrong things. To develop players, the brain should help the body perform at the highest possible level.
"This is part of the jigsaw, of the puzzle. It's important any top club, and Manchester United is one of the biggest clubs in the world - have the best possible people, and they should at least have all those little pieces available.
"It shouldn't be the case that in certain areas we don't have anyone. I strongly believe that every club in the future should have someone in this department."
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