Midfielder Clingan missed Tuesday's dramatic 2-1 defeat to Cardiff having failed to overcome a tight calf sustained last weekend against Plymouth, but he could well be involved for the short trip to the Walkers Stadium.
However, Clingan's possible return has been countered by the loss of winger McIndoe who went off at half-time against the Bluebirds with a back/hip muscle tear.
Otherwise, manager Chris Coleman has no new injury or suspension concerns for the clash, with defenders Ben Turner, Issac Osbourne and Jordan Clarke out for the long-term.
With Sunday's clash at Leicester sandwiched in between games against Cardiff and West Brom, Coleman has already stressed he is tempted to shuffle things around where necessary.
Kick-off 2pm.
