Messi was sent off for the first time in his Barcelona career during the match against Athletic Club on Sunday.
Although Hierro said he wants Messi and Ramos to stay in LaLiga, he stressed that their absence would not impact the league as a whole.
The embrace Messi gave Pedri after scoring has left many Barcelona fans hoping this is the beginning of a partnership that could help convince Messi to stay.
Lionel Messi returned to the Barcelona side after recovering from an ankle injury and Koeman opted to play him in attack alongside Martin Braithwaite and Ousmane Dembele.
Barcelona said that Messi is completing treatment for his right ankle and is expected to return to training after the match.
Messi has been linked with a move to Manchester City, where he would be reunited with Guardiola, since he expressed a desire to leave Barcelona in the summer.
The former Barca captain said that Messi has transformed his game over the years and became a 'more impressive player'.
Messi scored the third goal of the match to set yet another all-time world record.
Messi headed in from Jordi Alba's cross after his first-half penalty was saved to equal the mark set by the Brazilian great for Santos.
Messi overlooked Ronaldo while voting for Best FIFA Men's Player award; named Neymar, Mbappe as picks
The eventual winner for the award, Lewandowski, had voted for Liverpool's Thiago Alcantara, Neymar, and Manchester City's Kevin De Bruyne.
Alba canceled out Willian José’s opener by curling in a strike in the 32nd minute. The left back then helped the hosts take the lead a minute before halftime when he crossed for Frenkie de Jong to sco
Messi fired a left-footed shot off the far post and into the net to get Barcelona's breakthrough in the 76th minute after Levante had withstood the hosts with tenacious defending.
No team that had come to play at Messi's Barcelona had left with a victory in over seven years in the Champions League.
Both sides have already qualified for the last 16 from Group G but Juventus can overtake Barcelona if they win at Camp Nou by three goals or more, or by any two-goal margin other than 2-0.
Barcelona striker Lionel Messi had already been rested for the match against Dynamo Kyiv in the previous round.