Federer, 36, won the Australian Open in January but he has now decided to rest ahead of Wimbledon in the summer.
It was suggested that the Swiss star would at least feature at the French Open to try and regain the world No 1 crown.
But Federer has opted to skip every clay event, meaning Nadal will sleep a little easier while trying to defend 4,680 ATP points.
Leconte explained that he was disappointed with Federer for not choosing to play in Monte Carlo this week, although he did say he understood his decision.
“I understand that [decision],” he told Sky Sports.
“It’s a shame for us.
“Roger Federer has a better chance to beat him on two sets than in a five-set tournament.
“But I agree with Roger to play at the surfaces he likes and physically to stay fresh.
“I think for Roger you have to understand that ok we’re disappointed he’s not here but it will be so nice to see him play at Wimbledon and the US Open.
“Maybe if he wins Wimbledon again and decides in his last year to play all the different surfaces.
“But at the moment he’s really keen on Wimbledon and then the US Open.”
Nadal is hoping to kickstart his season by winning the Monte Carlo Masters but he faces a tough draw with a possible quarter-final clash against Novak Djokovic or Dominic Thiem on the cards.
Mickleach.com is your news, entertainment, music & fashion website. We provide you with the latest news and videos straight from the entertainment industry.