McClean posted on his Twitter page that despite the win, the performance overall was embarrassing, saying "Delighted as a fan we got the the win.. Personal level #fuming #f**kinjoke #embarrassing"
|BLACK CATS TAKE DOWN REDS
|11/1||Sunderland are 11/1 with Bet365 to beat Liverpool 2-1 next Saturday|
The 23-year-old Derry born midfielder was left on the bench as Giovanni Trapattoni sent on Shane Long and Kevin Doyle in the second half, with Long, Simon Cox, and Jon Walters all getting game time ahead of McClean on the wing.
McClean's post was retweeted over a thousand times from fans and disgruntled supporters, but was quickly removed from the social networking website.
You can watch a live stream of Republic of Ireland's friendly with Oman on Tuesday exclusively at Goal.com when you sign up to Livesport.