The Gunners succumbed to a disappointing 2-0 loss to Barcelona in the first leg of their Champions League last-16 clash at the Emirates Stadium on Tuesday night.
Arsenal have been in impressive form in the Premier League in recent weeks and the north London side were 2-1 winners against leaders Leicester City in their last top-flight game at The Emirates.
While Arsenal were undoubtedly disappointed with their Champions League setback, Ramsey appeared to be in an upbeat mood as he posted a photo from training ahead of Sunday’s clash at Old Trafford.
Ramsey wrote on his Instagram page: “What was the score last night @koscielny_official6?! Looking forward to another big game tomorrow #AFC”
Arsenal are in third place and two points behind Premier League leaders Leicester.
Arsene Wenger’s side host Swansea City at The Emirates on Wednesday night before making the short trip to bitter rivals Tottenham Hotspur next Saturday.
Get 8/1 enhanced odds on Tottenham to win or 11/1 enhanced odds on Liverpool to win at White Hart Lane on Saturday afternoon. Click here to sign up now. T&Cs apply.
MORE: Latest Man Utd news
MORE: Latest Arsenal news
MORE: The latest football news