The Cardiff City keeper is in competition with Blackpool's Matt Gilks and Kilmarnock's Craig Samson for the gloves in the Group A encounter at Hampden Park.
If he is selected by Gordon Strachan, Marshall will be looking to end a losing streak - with Scotland having lost on all six of his previous appearances, most recently the 2-0 defeat in Serbia in March.
Scotland's hopes of qualification may be over, but they impressed in their surprise 1-0 victory in Croatia in June and they were also some encouraging signs for Strachan in the 3-2 friendly defeat to England at Wembley last month.
Belgium, meanwhile, arrive at Hampden on top of the group, with a three-point lead over Croatia. Marc Wilmots' side are ranked 10th in the world by FIFA, 40 places above Scotland.
The hosts' 2-0 victory in the reverse fixture in Brussels last October spelled the end for Craig Levein, who was sacked by the Scottish FA the following month.
Strachan has won two and lost three of his five games in charge since being appointed in January, and has urged his team "to keep the ball and be progressive" as they look to upset the Belgians.
Wilmots, whose 24-man squad contains 10 English Premier League stars, has warned his side to be wary of a "more relaxed" Scotland side who have a "winning spirit".
