Chopra struck a dramatic injury-time winner against Tottenham.
Keane said: “I’ve said it before, if he’s from Newcastle or New Zealand, if he can add something, I will sign him.
“I keep saying that if we create the chances for Chopra he will score. I’m sure he was disappointed not to start the match but, like any decent player, he reacted in the right way.
“I just looked at him on the bench and thought he was keen to get on, he had that look. I’m delighted for him.
“The whole team were outstanding – the work-rate was excellent and there were a few good performers.
“We scored plenty of late goals last season and it’s not down to luck. Great credit to my players, they showed desire to keep getting in there.
“A lot of teams might have settled for a draw and it might cost us in other games but that desire is great, I’m delighted for the players.
“Everyone did their bit. In football you get your just rewards and the players worked extremely hard. They deserved it. The hard work will need to continue if we want to have a good season.
“The fans were fantastic. Every fan at the start of the season is not sure what to expect, but they were great.
“It’s very nice to get three points on the board and in football you get what you deserve and we deserved it.”
