Catalans visit Real Sociedad on Sunday before the first El Clasico of the season.
Real Madrid looking to extend five-game winning run in La Liga.
Messi, 29, scored twice to help Barcelona beat Celtic 2-0 in midweek.
Reports have suggested that the club could team up with kit suppliers Adidas to try and sign star forward.
Los Blancos have failed to put a timeframe on his return.
They also want five-year sentence for ex-Barcelona president Sandro Rosell and an €8.4m fine for the club.
Argentinian missed the weekend draw with Malaga due to illness.
Former Tottenham star was forced off during the Champions League 2-1 win over Sporting Portugal.
Watch all 10 goals that are in the running to receive the 2016 Fifa Puskas prize.
His clause is set at €250m, but he could leave for free in the summer of 2018.
Argentine missed La Liga draw against Malaga due to illness.
Atletico looking to close the gap on La Liga leaders Real Madrid at Vicente Calderon.
Luis Enrique's side can go top of the La Liga table with victory over Malaga at Camp Nou.
AS claims current assistant Juan Carlos Unzue could be promoted.
Luis Enrique says he is happy with goalless former Valencia striker.
Casemiro and Pepe remain on Real sidelines alongside Alvaro Morata and Toni Kroos.
Griezmann missed France's friendly fixture against Ivory Coast.
Jordi Alba also came back on Tuesday and should be ready for the La Liga clash.
The Spain international was approached by Mauricio Pochettino in the summer.
La Liga giants end their current agreement with Qatar Airways at the end of the season.
Jose Mourinho was the manager when Varane moved to Real Madrid in 2011.
20-year-old returned to Stamford Bridge for treatment in October.