The Serbian centre-back will leave for Inter at the end of the season and manager David Moyes has to find a replacement, whether from within or in the transfer market
The Serbian centre-back will join the Serie A side when his contract expires in the summer, leaving manager David Moyes with a huge gap to fill in defence when that happens.
The Scot has already hinted he could promote from within for the rest of the season, with a few games left.
"I've got young centre-halves to see and I'll be looking to introduce them in the final month or two of the season," he said.
Names that quickly spring to mind are Chris Smalling and Phil Jones, both of whom have been touted as long-term replacements for Vidic and his old partner Rio Ferdinand when they were signed. The former, 24, signed in 2010 while the latter, 22, came from Blackburn a year later. Further down the line, 21-year-old Academy graduate Michael Keane is one of the brightest propects at Old Trafford and has already made his first-team debut.
However, only 43.8% of Goal Singapore readers feel the club should promote a youngster, with the majority of 56.2% indicating that the Red Devils should spend money to get a top-class replacement in for next season.
United have been linked with a host of names such as Benfica's Ezequiel Garay, Porto's Eliaquim Mangala, Roma's Mehdi Benatia, Freiburg's Matthias Ginter, Fiorentina's Stefan Savic, Galatasaray's Semih Kaya and Nottingham Forest's Jamaal Lascelles, amongst others.