• Johnson: Europa League limbo
Tevez is currently in Italy receiving treatment on a hamstring injury and is not expected to be available for three weeks. With the Wembley showpiece, which will be screened live on ESPN, taking place on May 14 it is touch and go as to whether the Argentina striker will be available.
City are expecting an update on Tevez's condition this week and the forward is determined to help the club end their trophy drought.
"We are playing well and we have a chance to achieve something big for Manchester City," Tevez said. "For the club, owners and fans; as a player you want to play in the big occasions.
"I played at Wembley once for United against Everton in the semi-finals. We lost the penalty shootout so it's not a happy memory.
"United have been winning the games that we felt we could win - but we felt Saturday was an opportunity to beat them and dedicate an historic win to our supporters.
"I have played in the cup for three teams and know what an important competition it is. In some countries the domestic cup is not important. But because of the history and of what the FA Cup means to the supporters it carries more significance.
"It always has a special atmosphere because of that and I'm sure the game will be an amazing occasion."