Barca's point proved enough to guarantee their progression from Group B, with Inter or Tottenham likely to take second place. The club have named Messi in their squad for the match at the San Siro, even if he is yet to be given the medical all-clear.
A point was enough for Barca to put themselves into the knockout rounds of the European competition after Malcom's first goal for the club was cancelled out by Inter talisman Mauro Icardi. However, Icardi was unable to score against Barcelona when the two teams played in Spain. The extra rest should only benefit the Argentina global.
FC Barcelona have caused major confusion ahead of their Champions League fixture with Inter on Tuesday regarding the availability of captain Lionel Messi. They have won all three games since he got injured - against Inter and Real Madrid at Camp Nou and away at Rayo Vallecano at the weekend - dispelling the idea they are overly dependent on the Argentine. In addition to Messi being injured, Samuel Umtiti will miss another game with a knee injury.
Luis Suarez scored twice on Saturday, the second an 89th-minute victor to complete a late comeback against Rayo.
Guardiola parted ways with Messi and Barcelona in 2012, and went on to manage Bayern Munich before guiding the Sky Blues to the Premier League throne last season.
Clement Lenglet headed over the Inter goal just before the hour as Barcelona came close once again, before Handanovic made a smart save to keep out an effort from Rakitic. You can also watch the match via B/R Live and Univision Deportes En Vivo.