Belgium is set to face Tunisia in their second Group G match at Moscow's Spartak Stadium on Saturday.
"Everyone apart from [Vincent] Kompany and [Thomas] Vermaelen, who are medically fit but not ready for Tunisia, is ready to be on the pitch," Martinez told journalists.
READ MORE: Belgium Defender Vermaelen Resumes Group Training Ahead of Match Against Tunisia
Belgium beat Panama 3-0 while Tunisia lost 2-1 to England in the teams' first matches at the tournament.
The 2018 FIFA World Cup kicked off on June 14 and will continue until July 15, with the matches being played in 11 cities across Russia.
READ MORE: In Love With Russia: World Cup's First Week Through the Eyes of Foreign Fans