The Real Madrid target has played just once for Tottenham during preseason and will not play for his country on Wednesday.
The winger has featured just once for Spurs, scoring in the club's first preseason friendly against Swindon in July, as speculation continues to surround his future following Real Madrid's rampant interest in acquiring him.
Andre Villas-Boas admitted recently that he doubts Bale will be fit for Tottenham's Premier League opener against Crystal Palace on Aug. 18, and Wales assistant manager, Kit Symons, confirmed he will only participate in "light" training this week.
"Gareth will do a light session," Symons told Sky Sports News. "He's not done the sufficient work yet to feature [on Wednesday] but the great thing is he wanted to be part of the group, and we're pleased to have him on board.
"It shows the levels of trust that we've built up with all the top clubs, the way we conduct ourselves within the organization."
Symons, though, does not feel Bale's attendance at training will be a distraction for the rest of the squad, with a media attention tracking the 24-year-old standout.
"I don't think it will be [a distraction]," Symons said. "They only want to talk to Gareth, and we know Gareth won't be featuring on Wednesday night, so I don't think it will affect the group at all."