Lively (knee) is out for Monday's game against the Timberwolves, Alan Horton of the Timberwolves Radio Network reports.
Monday's game is the second leg of a back-to-back set, but despite seeing just 12 minutes Sunday, the Mavericks will hold Lively out as a precaution. Daniel Gafford (ankle) is also out, meaning the Mavericks could rely heavily on Moussa Cisse. Dwight Powell could be in line for more run as well.