Manchester City boss Roberto Mancini is wary of today's opponents West Ham United.
After watching the Hammers' 2-2 draw against Manchester United recently - a match the Londoners could have won - Mancini knows they will be in for a tough afternoon.
He said: "I think West Ham have had a good season.
"They showed this against United two weeks ago.
"It'll be difficult. They are a physical team and Andy Carroll is a strong striker."