Watch Brentford vs Tranmere Rovers Live Streaming
Watch Brentford vs Tranmere Rovers Live StreamingSalomon Kalou equalised in the 51st minute only for Esteban Cambiasso to fire the winner four minutes later.
The away goal could prove crucial but Lampard does not believe Chelsea can be lauded as favourites to go through to the quarter-finals.
It will be an emotional return to Stamford Bridge for Inter boss Mourinho and Lampard is well aware his side have the capability to hurt them at home as well.
"The away goal is very important these days and a 1-0 defeat would have been very frustrating for us," added the England midfielder.
"But we were pleased to get it back to 1-1 and then frustrated to give away another one. But our goal does give us something to go for at home.
"We know if we win the game 1-0 we go through but also we have confidence in ourselves that we can create as many chances, if not more, than we did here and try and score more than one goal.
"Inter Milan are a very good team and not to be underestimated. I think it would be very naive to say we are the favourites because they can also score at our place. So I would say the tie is 50-50."
