René Aufhauser, Niko Kovac, Jorge Vargas and Johan Vonlanthen on international duty.
After the celebrations to mark the title win the team are on holiday along with the coaches and club staff.
Training is to begin again with a fitness test in Thalgau on 11 June 2007.
For four of the champions the season is yet to finish.
Rene Aufhauser is to play for Austria on 30 May against Scotland and on 2 June against Paraguay.
Niko Kovac has two Euro 2008 qualifiers to complete as captain of Croatia. On 2 June his side play in Estonia and on 6 June face Russia in Croatia.
Jorge Vargas is scheduled to play in two friendly matches for Chile: on 2 June in Costa Rica and on 5 June in Jamaica.
And last but not least: Johan Vonlanthen is to play for Switzerland on 2 June against Argentina.
