The Midlands club’s captain started rehabilitation at a London hospital this week, with the sprightly attacker taking over as the outfit’s skipper in the mean time.
Agbonlahor has hailed Petrov, but admits that the news is a massive blow for the Villa Park club.
“The news about Stan (Petrov) was a massive shock,” Agbonlahor told Absolute Radio.
“For someone who’s as healthy as Stan, it was very shocking. But he showed bravery to come to the Chelsea game at the weekend.
“He knew he would have been asked a lot of questions and came and showed what a big effect he is to the players and also what a big captain and we’re all ready for him to battle through this.
“It’s hit the players hard. I think they showed great fight on Saturday for Stiliyan and were unfortunate not to get the right result. I think everyone’s close to Stan anyway and everyone’s been in contact with him, and he’s going to keep in contact with everyone on his progress.
“He’s done fantastic for this club, he’s been a great example, and everyone is hoping that he can get through this and then come back and captain us all again,” he concluded.
By Gareth McKnight