Speaking on Tuesday ahead of the Young Boys clash in the Champions League, Ralf Rangnick said: "Chris Armas will again hopefully join our team in the next two days [as an assistant manager].
"We have decided to bring in a sports psychologist, with Sascha Lense. He's from Germany, a former second division player. I used to work with him for three years at RB Leipzig."
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Both men are currently awaiting their United Kingdom work permits and could be in the dugout for the Norwich City clash on Saturday, December 11.
49-year-old Armas, who is clearly the more exciting signing of the two, was the manager at New York Red Bulls until last year before moving to Toronto FC.
Source: Manchester Evening News