Celta's lone goal was scored by John Guidetti with a shot from outside the area in the 69th, just a minute before Karim Benzema restored Madrid's two-goal lead from close range after a left-flank cross by Marcelo. If he wins the league and Champions League in the next two weeks, he'll probably be a shoe-in. The Malaga midfield is filled with technical talent, particularly in the form of reported Arsenal target Pablo Fornals.
There have also been some pundits, especially in Catalonia, questioning whether Malaga coach Michel, an ex-Madrid player, might be happy to see his old side seeing off Barca's challenge to claim the title.
Yet Real fans will be celebrating if they avoid defeat away to mid-table Malaga, whose boss is six-time Real Madrid title victor Michel, on Sunday (19:00 BST).
Isco was again the provider as he surged through the midfield before feeding the World Player of the Year to slot home his 13th goal in his last eight games.
Barcelona need to beat Eibar on the last day of the season and rely on Malaga doing them a major favour if they are to retain La Liga - as Real Madrid will lift the title if they get at least a point at the Rosaleda Stadium.
The Frenchman, who joined Madrid from Lens in 2011, has frequently been linked with a move to the Premier League in recent seasons, despite the fact he has been a key first-team player at the Bernabeu. "We're Real Madrid and we have to demonstrate that we're better and that we want to be the champions", Ronaldo said ahead of the final round of fixtures.
Atletico Madrid will play their final competitive game at the Vicente Calderon before moving to the 67,000 Wanda Metropolitano next season with Athletic Bilbao the visitors earlier on Sunday.
Villarreal, who have a one point advantage over the two Basque clubs, visit Valencia, whilst Sociedad travel to Celta.
United manager Jose Mourinho has already said Romero will start in the final ahead of regular goalkeeper David de Gea, as he has done throughout the European competition, and praised his performance. "They showed they want to be in that final". They are a very good team, who have had very good results, and have been playing very well.
"The only thing I look at is what we have to do, it has always been like this and will remain like that".
Barcelona are on a good run, having nine wins in their last ten La Liga matches, they have scored incredible 35 goals in that period.