Blackburn boss Sam Allardyce admitted he was ready to settle for a draw before David Dunn's late penalty sealed three points over Aston Villa at Ewood Park. [LNB] Dunn's winner capped a stirring comeback from Rovers, who had fallen behind to Gabriel Agbonlahor's third-minute strike then saw Vince Grella sent off for two bookable offences. [LNB] Allardyce said: "I would have been happy with a draw but I'm glad to say my players weren't. They started attacking and we got what we deserved."[LNB] He added: "I'm delighted at the way we kicked on after going an early goal behind from such a sloppy piece of defending. But it only knocked us back for a bit. We came storming back and Morten Gamst Pedersen had a good chance and we got our well-deserved equaliser. [LNB] "You rarely come back from behind to beat a top four or five team and we have done it in the last half hour and with 10 men. [LNB] "It's a day I'll remember for a long time. It's a great day. Days like this are what I do this job for." [LNB] Allardyce singled out Dunn as the driving force behind his side's second-half revival, adding: "Dunny was outstanding. I think he would have scored in the first half if Brad Friedel hadn't pulled off a world-class save." [LNB] Allardyce added that he had no complaints over Grella's red card and even had rare words of praise for referee Mark Clattenburg, adding: "I've got no complaints, they were clearly two bookable offences, the referee got the big decisions right." [LNB] Villa boss Martin O'Neill was disappointed at his side's failure to build on Agbonlahor's goal and ultimately see their 100% away league record go up in smoke. [LNB] O'Neill said: "I'm naturally disappointed to lose all three points. We got off to a great start and I thought even at 1-1 at half-time we would go on to win. Maybe we didn't create as many clear-cut chances in the second half but I thought we were worthy of a point but it's never easy here."