Justin Kluivert will have surgery on his left knee after being injured against Arsenal. Iraola said "it is very bad news" and he cannot not give a timescale for his return until the surgery has taken place on Thursday.
He said "it could be" Antoine Semenyo's last game for Bournemouth before his expected exit but there is "nothing agreed and nothing signed" yet.
Iraola added Semenyo has "been very professional" about the situation and he will be "almost impossible to replace".
On whether he is disappointed that Semenyo has chosen to leave: "Everyone has to make their own decisions. We are all different. I suppose when a big club comes calling, it's difficult. But we still don't know what is going to happen!"
Centre-back Veljko Milosavljevic has returned to training, but Ryan Christie needs "more time" to continue his recovery as he still has some pain when kicking the ball.
On the Cherries' recent results: "We are one of the teams that scores more goals and one of the teams that concedes more goals. We need to deal better inside our box."
On the financial position of the club in this transfer window: "I don't know our financial fair play situation. I understand the club has to sell some players to position themselves better for the next windows. I am not part of those decisions as head coach. I try to help in the process when signing players but I am not involved in the economical side."