The two keepers joined the club in January, with veteran Forster arriving on a short-term deal after Will Dennis picked up an injury, and Mandas joining on loan from Lazio.
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Petrovic has been Bournemouth’s number one this term, but he has, at times, had up-and-down performances.
He impressed against Wolves, though, and asked about his reaction to the increased competition for his place, Iraola said: “I think, even the arrival of Fraser Forster has been very good for him.
Fraser Forster. (Image: Richard Crease)
“A competition that has been there before you, experienced, has been playing in the Premier League very recently.
“He played here against us last season and I think he has been very good. And I think now, less time with Christos, one week, but I love the character also of Christos.
“He has come very hungry, very energised, willing to push. And I think I finished really happy with how the goalkeeping department has looked and I think it's going to improve.
“We have seen in the last games that Petro is really playing very well, and I hope they can keep between all the three the level of the position until the end.”