The striker saw action as a second-half substitute.
"It was good to be involved in my first game back and it was a good work-out overall," Keane, whose brother Michael also featured in the second half, told ManUtd.com. "We're disappointed with the goals we conceded in the second half but it was good to get a run-out and I'm sure we'll feel the benefits for it.
"[Before I came on] the manager talked to me about the shape [of the team] and where he wanted me to be with the ball and without the ball. He told me to make sure we stretched the game because there was a lot of space in behind so I tried to do that as much as possible.
"It's really good to play with different players and whoever you play with in this team brings so much quality. I enjoyed having the chance to play with Chicharito up front. He's good to work with, as is everyone. They all complement each other so it was a good experience."
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