The boss is readying his second selection since taking over the reins last week and the question has been whether he will heavily rotate with qualification and top spot in Group F already secured or use the home game to further drum his ideas into the group.
Several players were unavailable for the win over Crystal Palace on Sunday but there were encouraging signs in training this morning (Tuesday), when Luke Shaw, Raphael Varane, Jesse Lingard and Edinson Cavani were all present at Carrington.
"I haven't finally decided, to be honest," Ralf replied, when asked about his selection for the 20:00 GMT kick-off.