Blackburn boss Gary Bowyer heaped praise on Manchester City boss Manuel Pellegrini after watching his side take a 5-0 beating in their FA Cup third-round replay at the Etihad Stadium.
Alvaro Negredo put the hosts 2-0 up before Edin Dzeko netted a third and then Sergio Aguero made his mark within a minute of coming on as a substitute.
Bosnian Dzeko bagged the fifth to take City's goal total for the season to 99 and Bowyer sees no reason why they cannot go on and win the quadruple of Premier League, Champions League, Capital One Cup and FA Cup.
He said: "They're a phenomenal squad and phenomenal players and why can't they win all four?
"The manager is fantastic. He encourages them to just score more and more goals and it's phenomenal. And with the quality he's got, we were delighted when Negredo was going off and they brought Aguero on."
Bowyer was also quick to hail his own players despite them being on the end of a 5-0 scoreline.
"Full credit to us, we were excellent," he told ITV. "We kept going, didn't let the heads drop and we forced the goalie into some good saves in the second half.
"You saw the difference in the Championship and the Premiership. That was clinical finishing and you can see why they score so many goals.
"I'm nothing but proud of our young boys tonight and hopefully they've learned a big lesson."