Coventry manager Chris Coleman believes Chelsea will not relish their FA Cup quarter-final clash at the Ricoh Arena and claimed: "They are not unbeatable".
The Sky Blues set up a meeting with Guus Hiddink's side on March 7 after Leon Best's second half header earned them victory over a radically changed Blackburn line-up.
Coleman said: "We can't say we weren't thinking about Chelsea if we got past Blackburn because it was a chance to play against them at home, in front of a full house again. You've got to aim for that and the cup has been important to us. That is not an impossible task for us. It is difficult and, of course, they will be fancied team. They are a great team but it doesn't mean they are unbeatable."
He added: "A good cup run is important for the fans as well and for us to get to the quarter-finals, play Chelsea at home, is absolutely brilliant for us.
"Chelsea will pay us the respect we deserve and rightly so. They won't relish coming here with that type of atmosphere. They are not going to relish that."
Coleman is backing Sam Allardyce to turn around third from bottom Blackburn's fortunes before the end of the campaign.
He added: "He will know what relegation battles are all about. He was there at Bolton before they were finishing in the top six, top eight. He had a couple of years when they were down there.
"It is difficult because he has gone into Blackburn and it is not his team or squad of players and there is only so much you can do in one transfer window.
"There is only so much impact you can make as a manager. I found out last year in no uncertain terms. We really struggled. I couldn't change things enough the way I wanted to do it quick enough.
"Sam is in the same position but he is experienced and I think Blackburn have got enough to stay in the Premier League with Sam's experience as well."
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