How Belgium could line up against Croatia

The 29-year-old striker, who has played only twice for Inter Milan since the end of August due to hamstring and thigh injuries, came off the bench to make his first appearance in Qatar in the 2-0 defeat against Morocco on Sunday.

Manager Roberto Martinez has revealed that Lukaku - who has scored three goals in his last two meetings with Croatia - is ahead of schedule in his recovery, and the striker will be in contention to start if he makes it through their final two training sessions.

Michy Batshuayi still seems to be the most likely candidate to get the nod up front for Belgium, having led the line in the previous two games, but the Fenerbahce man would be expected to lose his place in the first XI if Lukaku is deemed fit to start.

Star attackers Kevin De Bruyne and Eden Hazard are yet to shine on the World Cup stage in Qatar, but both players are set to retain their places in the final third, although Leandro Trossard, Charles De Ketelaere and Dries Mertens are among the alternatives should Martinez decide to freshen up his frontline.

Elsewhere, Everton midfielder Amadou Onana will miss Thursday's game due to suspension after picking up a yellow card in both of the first two group fixtures, with Youri Tielemans poised to join Axel Witsel in the middle of the pitch.

Thibaut Courtois is in line to make his 100th international appearance between the sticks, while one of Timothy Castagne, Leander Dendoncker, Wout Faes or Arthur Theate is expected to start in the back three alongside experienced defensive duo Toby Alderweireld and Jan Vertonghen.

Thomas Meunier should retain his spot at right wing-back, while Yannick Carrasco will be hoping to force his way back into the first XI on the opposite flank ahead of Thorgan Hazard.

Belgium possible starting lineup: Courtois; Castagne, Alderweireld, Vertonghen; Meunier, Tielemans, Witsel, Carrasco; De Bruyne, E. Hazard; Batshuayi