Javier Tebas will not turn a blind eye to LaLiga's financial fair play rules to allow Barcelona to keep Lionel Messi.
Barca president Joan Laporta said this week that talks with Messi, who became a free agent for the first time in his career this month, were "progressing adequately".
And reports on Wednesday claimed Messi had agreed a new five-year contract with Barca that will pay him half his original salary.
Speaking prior to the emergence those reports, LaLiga president Tebas rejected the notion he could ignore salary cap rules to allow Barca to retain the services of the Argentina superstar.
In doing so, he hinted Barca could come under scrutiny from the league if they release players or staff to enable them to keep Messi.
"No, I won't [turn a blind eye] for Messi, it's impossible. There are many workers [at LaLiga] and in the economic control [department] as well," Tebas told Radio Marca.
"We often have to explain [the economic controls] to agents and players because they don't know about it or think clubs are deceiving them, and we've had to explain it in recent years.
"We'll have to analyse everything properly, because if there are dismissals for economic reasons but then they bring in Messi and others... we'd have to look into that.
"Right now, I can only give my opinion, and that is that it is odd that there has been no offer [for Messi] from Manchester City or Paris Saint-Germain.
"And I firmly believe there isn't and that the player wants to stay."
Messi is coming off a 2020-21 season in which he scored 38 goals in all competitions, the fourth-most across Europe's top five leagues behind Robert Lewandowski (48), Kylian Mbappe (42) and Erling Haaland (41).
The sole reward for his efforts was the Copa del Rey, as Barca missed out on LaLiga and lost in the last 16 of the Champions League to Mbappe and PSG.
However, he crowned the campaign with his first senior international trophy, helping Argentina to triumph in the Copa America on Saturday as they defeated Brazil 1-0 in the final.