The Barcelona midfielder missed the game against Sweden after contracting with Coronavirus.
Now, La Roja have confirmed that Busquets would join the main squad ahead of the second group stage game against Poland.
A statement from the Spanish national football team read: “The captain of the national team, Sergio Busquets, will join the Spain camp this Friday and will travel with the team to Seville once Covid-19 has been overcome.
“The Catalan has given a negative result in the result of the last PCR test, and, once all the health protocols have been fulfilled, he will be able to return with the national team in the next few hours.
“Sergio Busquets will meet his teammates again hours before the trip to Seville on the eve of Spain’s second match at Euro 2020, which will be played against Poland.”
Being the captain of Spain and an untouchable under Enrique, Busquets is likely to make it to the starting 11 against Poland.
The 32-year-old is coming off an impressive season at Barca, playing an integral role in the side’s success in the Copa del Rey. Despite initial struggles, Busquets returned to his usual self as the season wore on and Ronald Koeman deemed him untouchable.
Spain played out a goalless draw against Sweden, and they will look to secure three points against Poland on Saturday.