Aluko gave Chelsea hope .
Stoney thwarted Chelsea by heading home a corner to make it 5 - 3 and secure Arsenal 's place in the final at Stadiummk in Milton Keynes .
Aluko gave Chelsea hope but Stoney thwarted them by heading home a corner to make it 5 - 3 and secure Arsenal 's place in the final at Stadiummk in Milton Keynes .