LaLiga president Javier Tebas says Barcelona have a lot of work to do to re-sign Leo Messi.
Messi is leaving PSG and wanted back at Barca, but Tebas insists the LaLiga's financial controls must be met.
He said, "Barcelona knows the efforts that must be made and the rules to be followed with the viability plan.
"The situation must be monitored for more than two seasons. This is where we are. They will soon have an answer to the viability plan. They are aware of everything.
"I don't know if it's for Messi or whoever. In order for a player to arrive, others have to leave and this way they save what they have to save.
"They work and we supervise. This is our function."