Brazilian attacker Vinicius Junior said it will be "a bit difficult" to be fit in time for Tuesday's World Cup qualifier against Argentina, after limping off with a left-thigh injury against Colombia.
Real are second in the standings on 32 points, two behind surprise leaders Girona, who beat Rayo Vallecano 2-1 earlier on Saturday.
Vinicius, who has been racially abused regularly in LaLiga games for the last two seasons, was recognised for starting a foundation that is building schools in impoverished areas and investing in education in Brazil.
The Brazilian forward was racially abused during his team's 1-1 draw on Saturday at Sevilla, with the Andalusian club ejecting a fan from the stadium.
Sevilla expelled a supporter for "racist and xenophobic behaviour", the club said in a statement, with Vinicius thanking them for their quick action, as well as highlighting another incident
Diniz took temporary charge of Brazil when Tite left the role following their quarter-final exit at the World Cup in Qatar and will be replaced by Real Madrid coach Carlo Ancelotti next year
Valencia-based newspaper Super Deporte ran a front page on Friday labelling Vinicius "Pinochius" with an image of a long nose over the player's face -- a reference to fictional character Pinocchio, whose nose grows every time he tells a lie.
The 23-year-old has been out since suffering a hamstring injury against Celta Vigo on August 25 but has recovered quicker than expected.
Vinicius, who limped off early in Madrid's 1-0 La Liga win against Celta Vigo on Friday, will reportedly be out for up to six weeks with a hamstring injury, taking him out of Brazil's qualifiers against Bolivia and Peru on September 8 and 12, respectively.