The Belgium manager, Roberto Martínez, will make a call on whether to select Vincent Kompany in his World Cup squad on Monday, with the Manchester City defender having undergone a scan on the groin injury he sustained in a 0-0 draw with Portugal on Saturday.

The 32-year-old walked off the pitch without waiting to be substituted early in the second half after he overstretched in a challenge on Gelson Martins, with Martínez admitting afterwards that he would need to “wait 48 hours” before a decision could be made over his fitness.

Fifa’s deadline for countries to name their final 23-man squads expires at midnight, meaning the former Everton manager could have to take a risk to include the defender, who also missed the 2016 European Championship with a leg injury.

“You don’t want to lose players like Vincent,” Martínez told the Belgian broadcaster VTM after the match in Brussels. “There’s the experience ... there’s a little bit the knowhow, there’s the communication on the pitch. I think that understanding – knowing what’s expected in big games and big moments – is important, so you don’t want to lose any of those players.”

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He added: “It is one of those blows nobody deserves. Since day one he has worked at an incredible level. He has tried to drive the team forward and taken responsibility. It has been a joy and you wouldn’t want to break that. When he came off we were all very much worried, particularly because it is so close to naming the final squad. We need to remain neutral in our judgment. He told me he felt discomfort and he knows his body well. He knows when something is not right.”

Kompany’s career has been blighted by injury, although he did make 17 Premier League appearances for City last season – more than he has managed since 2014-15. He won his 77th cap against Portugal, having made his debut for the national team in 2004. “We feel a little bit disappointed for him because he’s been working so well in the camp,” Martínez added. “Already his influence in the group is always positive. He always wants to help and he’s been working extremely hard.”

Martínez is still due to omit five players from his original selection but last week was forced to deny his squad had been revealed by a television report that showed footage of mattresses being loaded up by a Belgian bedding company before their departure for Russia with labels indicating the player for which they were designated. That predicted the goalkeeper Matz Sels, Christian Kabasele, Jordan Lukaku, Leander Dendoncker and Adnan Januzaj would miss out.