Marco Di Vaio, who leads the Impact with 11 goals, tying him for second most in MLS, returned to his native Italy early in the week to attend to some personal matters.
Di Vaio actually asked Impact president Joey Saputo for a leave of absence prior to the 4-0 defeat at New York Red Bulls, and while Saputo said on Wednesday that Di Vaio was expected back the next day, he was nowhere to be found at training on Thursday morning.
"You never know, but I spoke to him [Wednesday] and, you know, there are more important things than football," Montreal head coach Marco Schällibaum told reporters. "I extend my thoughts to him. I understand this situation. We won't force anything. He has more important things to do. We'll miss him on the field if the situation stands, but we have to work along with this. I trust the others."
Dallas will still need to deal with the likes of Patrice Bernier and Felipe Martins this weekend, both who have five assists on the season.