But Keane told ITV Sport: "I've never heard so much rubbish in my life. Why do we have to listen to that garbage?
"It's just utter nonsense what he's talking about. He's manager of Manchester United, one of the biggest clubs on the planet. The squad he's got... and he keeps moaning about fixtures and fatigue.
"We were just looking at some of the cup draws they've had. They've had an easy ride in the cups; some good draws and a lot of home draws. The guy's talking absolute nonsense. I've never heard so much rubbish in my life.
"Maybe the club's too big for him. He can't deal with all these demands at the match. What matches? Man United reserves could have won that game tonight. I'm sick to death of him."
United defender Marcos Rojo was seen eating a banana towards the end of the game, passed to him by Ashley Young from the substitutes bench, as Rojo appeared to be suffering from fatigue.
But Keane said: "I think that was all staged, without a shadow of a doubt.
"He's talking about the player collapsing. That was easier than a training session. Eleven against eleven on the training pitch; that was easier than that.
"And he's talking about players collapsing. What rubbish. I've seen players maybe get Jaffa Cakes passed onto the pitch, so I wasn't surprised a player was looking for some sort of food.
"But I think they made a bigger drama than what it was. He's got other staff. One of the fitness coaches could have come on with that, the medical staff. He's passing it on to Ashley Young, and he's passing it on.
