He told waiting reporters: "I got back home from New Zealand on Monday with just enough time to pack my bags for the trip here.
"But I'm feeling fine and looking forward to the season ahead and trying to make a contribution to this Munster squad."
The South African centre was met at Cork Airport by Munster team manager Shaun Payne and operations manager Bryan Murphy, before joining Chief Executive Garrett Fitzgerald in the Cork International Hotel for a media briefing.
"So really the remainder of that campaign and the Tri Nations has been my pre-season, so I'm pretty happy with my fitness."
de Villiers was later taken by Payne to Limerick where he will be based and where the regulatory fitness/medical tests will be conducted tomorrow.
He should be out for his first squad training session next week, with the prospect of featuring in the matchday squad for Munster's Magners League clash with the Dragons in Cork on Sunday, September 27.