The Italian trainer praised the Canaries midfielder and is willing to give him an opportunity to play behind the striker for the Boys in Green
The Norwich City midfielder, who has just one senior international cap, was a surprise inclusion in the Ireland squad announced yesterday and Trapattoni, while admitting that he was a skilled player, stressed the importance of his 'system'.
"We know he is beautiful but he play in this position behind the striker," he told reporters. "Our system, until now, we tried this in the past (against Serbia) with James [McClean]. It was not positive. And in the past, we have needed two strikers in our system."
He continued: "I have seen Hoolahan before, I know him very well. I have tried also to play one striker and we can see what he can do. Sure, he can play. We have to decide if it's the first half or the second half, but he will play a minimum of one half."
With Hoolahan likely to play some part in the fixture against Greece, Trapattoni also revealed his desire to pair the Canaries midfielder with Wigan midfielder James McCarthy, while also experimenting with one striker.
"Only on the pitch, he can answer us. He has grown over three years but now with, for example, [James] McCarthy, I wish to see them on the pitch together," he said. "You'll only find out on the pitch if someone at international level is going to be up to it, or not up to it. If I don't try this, then I won't find out the answer.
"I will use him behind the striker. I couldn't say to him, go in midfield. If I call him, we go with one striker, like he does at Norwich," concluded Trapattoni
The Republic of Ireland will face off against former European champions Greece at the Aviva Stadium on Wednesday November 14.