By Italy correspondent Gianluigi Carrozzini

Guillermo Varela has spoken of his frustration that Louis van Gaal blocked a deadline-day loan move to Genoa.

The full-back was on standby to complete a temporary switch from Manchester United to the Italian club after the terms of the deal was agreed between the two clubs.

But Van Gaal pulled the plug on the transfer due to his full-back shortage, which had prompted him to make a vain attempt to sign Mathieu Debuchy on loan from Arsenal.

Varela, 22, played the full 90 minutes of Friday’s 3-1 FA Cup fourth-round win over Derby after stepping in for the injured Matteo Darmian.

But Darmian was restored to the starting line-up at right-back in Tuesday’s 3-0 win over Stoke, with Varela an unused substitute.

The Uruguayan is disappointed at not being given the chance to play regularly in Serie A for a few months.

“At my age it so important to play more minutes,” Varela told El Pais. “But I’m also aware that its important and a good thing if your coach wants you to stay and counts on me.”

Manchester United right-back Matteo Darmian has joined the club's growing casualty list

Right back: Van Gaal restored Darmian to the United team in place of Varela

The Premier League club have been beset by a series of injuries to their senior full-backs, with Luke Shaw, Antonio Valencia, Marcos Rojo, Phil Jones and Ashley Young all long-term absentees.

Uruguayan Varela, who is principally a right-back, was the first signing made by former manager David Moyes and spent last season on loan at Real Madrid’s B team Castilla.

He returned to Old Trafford this season and has made four senior appearances, in the Champions League defeat by Wolfsburg and against West Ham, Bournemouth and Derby.