Gloucester director of rugby David Humphreys has backed Matt Kvesic to star for England if selected by head coach Eddie Jones.
The openside impressed with his work at the breakdown at Twickenham and put himself in contention to be selected for the Six Nations with a big performance.
"I have no doubt that Matt Kvesic is an international player, is an international number seven and the England seven-in-waiting," Humphreys said.
"He has got to produce those performances week in, week out, but when to come to a big stage like playing at Twickenham in front of 70,000 – we talked about it before the game – big players produce big performances.
"In the context of the occasion, but more particularly against who he was playing, that summed up where he is. He is ready to play international rugby.
"If you have watched our performances during the course of the season, he has played at an international level almost every week.
"Against a very good team he did really well and he thoroughly deserved his man-of-the-match award.
"He is completely dedicated and hugely ambitious to be part of a successful Gloucester team, but ultimately like all top players he wants to play for England and be their starting seven.
"All he can do is keep producing performances like that and if you are Eddie Jones, he is going to be hard to ignore."
Harlequins boss Conor O'Shea also praised Kvesic for his work in stopping the Big Game hosts around the ruck area.
"We allowed him to be become too much of a factor in the game by not clearing him out," O'Shea said.
"You could argue that some of the places he was coming from where interesting to say the least. Luke Wallace came on and did a pretty good job at the end, but Matt was outstanding around the breakdown.
"We know he is always a factor when you play him and we allowed him to become too much of one. Whether he gets a bit of leeway, you ride your luck when you are a seven."