"They have Lionel Messi and I think they were the better team even though we competed well in both games", Alonso said.
'Obviously there is no extension signed but I don't think now is the moment to do it.
Chelsea are now four points away from fourth position with the season coming close to the end and look highly unlikely to finish in the top four.
The 26-year-old holding midfielder was named as Chelsea FC's best player in an otherwise disappointing night for the Premier League clash at Camp Nou.
United Kingdom seeks independent verification of nerve agent used in attack on spy
They have been in a critical condition in hospital ever since. However, Moscow denies it had anything to do with the attack.
"I have no other thing to say", he added after being pressed on whether he was guaranteeing he will remain at Stamford Bridge. "I'm a bit annoyed by it because it's a talking point and it's a thing people want to dwell on".
With no shortage of clubs interested in his services, Hazard may decide to seek Champions League football for himself next season if Chelsea don't qualify for Europe's elite club competition.
The win saw Barcelona progress into the quarter-finals 4-1 on aggregate after the first-leg ended 1-1.
Antonio Rudiger has talked up the importance of the FA Cup to Chelsea as they set their sights on silverware in 2018.
"Apart from that we defended well, tried to play well and we had chances". Why would they stay if we can not compete with the likes of Manchester City both domestically and in the transfer market? If we have that same level of commitment, we will win. "The FA Cup is still on for us, we have to go for it and that starts on Sunday". "We lost in the final past year and we are hungry to go to Wembley again and do something awesome".