The Barcelona talisman missed his side’s opening Copa America Centenario victory against Chile - a repeat of the last Copa Final - on Monday night due to a back injury, as the Albiceleste did the business without the current Fifa Ballon d’Or holder.
The South American giants started with in-form Gonzalo Higuian upfront, supported Nicolas Gaitan, Ever Banega and Angel di Maria, with the latter two on target to help their side to a 2-1 win over last year’s champions.
Yet the Argentines will be boosted by the return of their skipper soon, ahead of their next group stage encounter against Panama on Saturday.
"The expectation is that in four days Messi is in a position to play," Martino told reporters.
The 53-year-old was content with his side’s win over Chile, especially considering they secured the win without their key player.
"I liked the 90 minutes we played. We deserved to win," Martino said.
"We must continue to overcome any absences in our team. The team knew how to handle different aspects of the game and we were fair winners."