Speculation about the Seasiders' winger's future is growing with a host of clubs reported to be queuing up to try to woo him.
Hoolahan's inclusion in Trapattoni's 28-man squad for the friendly internationals against Colombia and Serbia later this month has triggered a rash of fresh reports suggesting that the Seasider is a wanted man.
Norwich boss Glenn Roeder is certainly one manager believed to be actively pursuing Hoolahan.
However, it remains likely that the winger will be a target for one of the Championship's bigger hitters, such as Wolves, Charlton, Watford or last night's play-off losers Crystal Palace.
Hoolahan flew back to Ireland after Blackpool's final game against Watford and didn't show for the end-of-season player of the year awards.
He is said to have told friends that he won't be playing his football at Bloomfield Road next year.
He remains under contract at Pool but he has a clause in his contract allowing him to leave if another club bids in excess of £250,000.
With the help of agents, this will be known by other clubs and makes Pool's chances of hanging onto Hoolahan appear slim.
"I would hope he is still our player next season but I can't say for definite because if it doesn't happen then it will look as though I don't know what I'm talking about," said Seasiders boss Simon Grayson.
"If he's still here great and that's what I hope will happen."
Hoolahan jets to Portugal tomorrow to link up with the Republic of Ireland squad and take part in a training camp.
The Republic take on Colombia on May 24 and Serbia on May 29.
Italian Trapattoni, who guided AC Milan and Juventus to Serie A titles in his homeland, replaced Steve Staunton as Irish boss in March and is said to have been impressed by Hoolahan.