Australian Open winner Nadal, 35, suffered a fatigue fracture in his ribs at the Indian Wells tournament in mid-March and has now been in rehab for just over a month.
"Despite the fact that I will arrive at the tournament at the last minute and that the training has been difficult, I want to play at home because the opportunities are few," Nadal wrote on Twitter.
He missed the big gravel tournaments in Monte Carlo and Barcelona during the injury period.
The highlight of the spring, the French Open, where Nadal has 13 titles, begins on 22 May.
Roger Federer has not played a game since Wimbledon in early July last year and has had his knee operated on three times in 1.5 years.
In February, both Nadal and Federer announced that they had accepted the Laver Cup, where Europe meets the rest of the world, in London on September 23-25.
Today, the 40-year-old added to the ATP tournament in Basel starting October 22 to the list of tournaments.
Started in the tournament as a ball boy
Federer has won the indoor tournament, where he started as a ball boy, ten times.
He has already been assigned the game day for his first match.
On Tuesday, October 25, the icon will enter the track with its protected ranking as ninth, which sounds like a perfectly directed farewell for Federer, who then turned 41.
Federer has not commented on his comeback plan, either to the organizer in Basel or to his 9.2 million followers on Instagram.
The tournament in Basel has been canceled for the last two years due to the pandemic.