The left-back is due at Old Trafford with Swiss employers, Young Boys BSC.
He is out of contract at the end of the campaign, which the Sun claims has alerted several Premier League clubs, including Watford and Burnley - adding that a cut-price January transfer is possible.
At 26, Benito is a younger alternative to the respective Watford and Burnley left-backs, Jose Holebas (34) and Stephen Ward (33).
The Switzerland international was previously on the books of FC Aarau, FC Zurich and Benfica, from whom he arrived at Young Boys for £2.7 million three years ago, according to Transfermarkt.
He has been capped twice by his country, for whom he is the understudy to AC Milan's Ricardo Rodriguez.
Would Benito be a good addition for Watford / Burnley?
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