Mahan told College Central that he will turn professional after this year's U.S. Open, which he qualified to play in after finishing runner-up to Ricky Barnes in the 2002 U.S. Amateur.
He is only able to compete at Olympia Fields as an amateur.
After his week in the Chicago area, Mahan said he will start to secure exemptions into PGA Tour events. He is currently going through the process of finiding an agent to resprent him.
When asked where he might make his professional debut, Mahan said, The Western Open would be great, as I have played in many of their amateur events over the years.
'I would like to have the possible exemptions spaced out, so I will be fully prepared each and every time I tee it up,' he added.
Mahan is allowed seven sponsor's exemptions under tour rules.
Mahan finished eighth in last weeks NCAA National Championships, while the Cowboy team placed second behind Clemson University. He tied for 28th in this year's Masters Tournament, shooting 73-72-73-76 (6-over-par 294).
Mahan shared the Ben Hogan award for collegiate player of the year with Barnes. He won three collegiate tournaments this year, including the Big 12 championship by 13 shots. His yearly stroke average was 70.62.