The 21-year-old has been in excellent form for the Baggies and the Three Lions Under-21s this season, and he notched his sixth goal in the Premier League in the campaign in his side's 2-2 draw against Manchester United.
Irvine told the club's official website: "Berahino has been in great form and he deserves what he's getting as a reward. His application in training is top class. He's behaving like a top professional on and off the pitch and if he keeps doing that he has a great future.
"If he scores goals he has a great chance but Roy [Hodgson] will decide when the right time is for him to go him. I told him to keep doing the right things and the rewards will come.
"People will make those decisions and if he keeps performing like that he has a real chance of becoming a senior international at some point."
The Baggies are 14th in the Premier League with nine points from their eight matches this season.