Iran’s Foreign Minister Mohammad Javad Zarif said on Friday he would present the United States and European powers with a “constructive concrete plan of action” over reviving the 2015 international agreement to limit Tehran’s nuclear capabilities “shortly.”

The statement is the latest sign of movement from Iran on a potential return to negotiations as Western diplomats aim to restart dialogue as quickly as possible to take advantage of a narrow time window before the country’s presidential elections, scheduled in June.

Zarif also shot down comments by a conservative senior Iranian politician who suggested that Iran was willing to negotiate if offered a “clear signal” that sanctions imposed by the previous administration will be revoked within a year.

“They can announce and reassure us that all sanctions imposed after the [2015 nuclear deal] would be lifted in less than one year and tell us to go and negotiate the process,” said Mohsen Rezai, a policy adviser to Iran’s supreme leader, serial presidential candidate and former commander of the Islamic Revolutionary Guard Corps, according to Financial Times.