The Austrian netted twice to help the Villains book their spot in the final four of the competition, after replacing the injured Darren Bent on the 35 minute mark
Lambert praised the 21-year-old’s hunger and determination after the game:
“He was brilliant, one thing about Andi is he is a natural finisher and his work ethic for the game of football is absolutely brilliant.” He is quote by the club’s official website.
“If Andi was getting X amount of money, you’d get the same out of him in every game.
“That is a testament to him. I left him out just to give him a rest in the last couple of weeks but Weimann is a natural goalscorer.
“He ran himself into the ground, especially in the two Manchester games and the Arsenal game, but he came back tonight and he certainly knows where the goal is.”
The Scotsman was also happy with the overall performance of his team:
“I thought in the whole game we were excellent,
“Their goalkeeper made some terrific saves. Norwich had chances as well.
“But I thought the lads were excellent. We’ve been playing like that since the Sunderland game.
“We’ve been playing really, really well and not had the results we might have had. I’m delighted for the team, I really am.”
Steve Morison opened the scoring for the Canaries, before goals from Brett Holman, Weimann and Christian Benteke decided the tie.