DELIGHTED Brendan Rodgers says there is no limit to what his Celtic side can achieve after they easily swept Hearts aside at Tynecastle.

The champions cruised to a 4-1 win in the capital thanks to goals from in-form Matt O’Riley, Daizen Maeda, Kyogo Furuhashi and Tomoki Iwata, with Lawrence Shankland’s counter for Hearts immaterial in the end.

And after watching his team pick up their sixth league win in a row to maintain their unbeaten start to the Premiership season, Rodgers wasn’t about to set any limits on how much better Celtic can be.

"It's constant evolution, there's not a destination to where we want to go,” Rodgers said.

“It's just continual improvement and finding levels. I think the big thing is consistency.

“It's obviously a very difficult ground to come to but I love challenges like this, coming to really hostile environments, because it's an opportunity for you to show your value and worth as a team, dealing with circumstances.

“I think the players dealt with it ever so well. My only criticism is that we could have had more goals.

"Their keeper has made some great saves and just when we got to 4-1, I thought we could have managed the ball better, so you are not having to run so much. You want to have a rest, rest with the ball as opposed to defend. That was my only criticism.

“Overall, after an international break when a lot of these guys are a wee bit heavy-legged towards the end, a lot of travel, what they gave the game was absolutely brilliant.

"We were very, very good. I think it was important that we started the game well and we tried to bring an energy and a speed to the game at the beginning that would make it difficult for Hearts.

“I've been here enough times to know that if you don't make a good start here, it can be a challenge.

“But the players played some wonderful football and worked ever so hard in the game. We're really pleased overall.”

Rodgers reserved special praise for star man O’Riley, who now tops the Premiership scoring charts with six goals after his stunning opener.

“He is developing and that is what you want to see,” he said.

“It is a huge testament to him as he just wants to improve. We want to keep his game moving through the levels.

“His attitude to learning is brilliant as he is so honest to the game. He trains well and prepares well. He does all the right things and gives himself every chance, “It was a brilliant finish. That is not an easy technique coming across your body.

“He makes a good run in the first place and is hungry to get in there. Then it is great finish.”