Thomas Frank has insisted that one Manchester United star is “unplayable” at times, despite having very little impact against Brentford in the 1-1 draw on Saturday. Manchester United walked away with only a point from their Premier League tie at the Gtech Community Stadium, with Erik ten Hag’s men falling short in their display. Mason Mount came off the bench and scored deep in injury time after United broke the deadlock against Brentford in their first match since the international break. However, Thomas Frank’s men rallied back and Kristoffer Ajer scored the all-important equaliser for Brent…