The 25th Dubai Desert Classic boasts a tournament prize pool of $2.5million, but those at the top of final round leaderboard could be left casting envious glances at a player who finishes behind them at Emirates Golf Club.

That's because the same amount is also on offer for a hole-in-one on the 17th hole.

So what's the catch? It turns out there is more than one.

Firstly, the 17th hole is not a par three, but a par four measuring some 359 yards, although it will be shortened to 325 yards for the final two rounds.

Secondly, the only time the money can be won is in those last two rounds. Make an ace on Thursday and Friday and all you'll get is an albatross and a pat on the back.

Finally, it's a dogleg right with trees and desert areas waiting to catch errant shots.

Nevertheless, Rory McIlroy will not shy away from taking a shot at the green, even if he is in contention for a second Desert Classic victory this weekend.

"If I've got the right wind on the 17th in previous years, especially off the back tee, I'll go for it," McIlroy told a pre-tournament press conference.

"I think for Saturday and Sunday, they're going to move the tee up a little bit. No matter what way the wind is, it shouldn't be a problem to get there.

"There's not many chances you have to win 2.5million in one shot, so I'll give it a go.

“If you're confident enough with your driver, why not?

“It mightn't even be a driver, that's the thing. If they move the tee up, it's only going to play 295 or 300. It's a 3-wood."