Joshi, known as arch rival of Prime Minister Narendra Modi, had been expelled as the secretary of the party in 2005 following a controversy surrounding a "sleaze" CD purportedly featuring him.
"We will talk tomorrow on this once the conclave is completed," Joshi told reporters at the airport when he was asked whether his visit to the 'karyakarta shibir' in Gujarat is a prelude to his formal 'home-coming' to BJP.
Joshi, who was made in-charge of Uttar Pradesh BJP ahead of Assembly elections in 2012, quit from all posts of the party ahead of its national executive meet.
"Joshi has always been a part of RSS which is like his home," senior leader Manmohan Vaidya said when asked about Joshi's participation at the event.
More From This Section
RSS had invited former and present RSS pracharaks (full-time volunteers) from Gujarat - Modi, Joshi and Vaidya - among others, to attend the event.
However, an RSS spokesperson said Modi is not attending the conclave which is concluding tomorrow.
Nearly 15,000 RSS workers are attending the three-day conclave which began at Kathwada area here yesterday.
RSS chief Mohan Bhagwat will address the valedictory session.