Reading - Arsenal live updates

Steve Clarke: "I know that if we play the perfect game, then we have a chance to go through. If you make mistakes in possession and give the ball away to Arsenal they will punish you. If you make silly mistakes in and around your own box they have got players that will capitalise on those chances. Maybe in the Championship you can make two or three mistakes in a game and the opposition are not quite good enough to take those chances. But you know if you make them against a top team they will take them – and we have to be aware of that."

Arsenal and Reading have played each other 12 times in all competitions and the Gunners have won them all.

Arsenal have participated in a joint-high 18 and won a joint-high 11 FA Cup finals each. This will be their 28th semi-final appearance (W18 L9) which is a record for an English club.

Olivier Giroud starts on the bench today. He has scored seven and assisted four goals in his 12 FA Cup appearances and netted in two of his last three appearances against the Royals.

STAT: Reading have only ever made the FA Cup semi final once before, in 1927 when they lost to eventual winners Cardiff City.

So the news from Wembley is that Pavel Pogrebnyak starts for Reading having overcome a calf complaint but Jem Karacan has to settle for a place on the bench. Jack Wilshere returns to the bench for Arsenal after his ankle problem and Wojciech Szczesny is back in goal. Danny Welbeck starts up front with Olivier Giroud on the bench.

Today's teams: Reading: Federici, Gunter, Obita, Pearce, Hector, Williams, Chalobah, McCleary, Robson-Kanu, Mackie, Pogrebnyak. SUBS: Andersen, Kelly, Cooper, Karacan, Norwood, Cox, Yakubu. /// Arsenal: Szczesny, Debuchy, Mertesacker, Koscielny, Gibbs, Coquelin, Ramsey, Cazorla, Ozil, Alexis, Welbeck. SUBS: Ospina, Gabriel, Monreal, Flamini, Wilshere, Walcott, Giroud.