"The president will come back to Sanaa within days," Tareq al-Shami, a ruling party official, told Reuters.
Yemeni President Ali Abdullah Saleh is being treated in the Saudi capital for injuries sustained after a rocket attack on his presidential palace on Friday.
Meanwhile Yemen's opposition vowed on Sunday to try to prevent the return of Saleh,
"We will work with all our strength to prevent his return," parliamentary opposition spokesman Mohammed Qahtan told AFP. "We see this as the beginning of the end of this tyrannical and corrupt regime."