The Argentina international has confirmed he is heading to Old Trafford, with the Red Devils reported to have agreed a £16million deal for the versatile Sporting Lisbon defender.
Vickery, however, is far from convinced about the 24-year-old's qualities, telling Extra Time: "Louis van Gaal is clearly thinking in terms of a having back three in his armoury and he might think Marcos Rojo ticks the boxes as someone who can play at left-back, can play centre-back, and therefore would be comfortable left-side of a back three. But two months ago, certainly before the World Cup, no one really imagined Rojo as a player of Manchester United's calibre.
"He did well in the World Cup and his market value has obviously risen as a result, but I'm having to get it round my head a little bit the idea he might be wearing the United shirt because, certainly until recently, I didn't really see him as that calibre of player."
