"The session starts with good news! Dani Carvajal started the session with the team today to do some of the planned work. Come on, Dani!" the Spanish team said via their official Twitter account.

Carvajal suffered a hamstring injury during Real Madrid's 3-1 victory against Liverpool in the Champions League final in Kiev on May 26. Earlier, media reported that the 26-year-old could miss up to three weeks.

The defender has been capped 15 times for Spain since 2014 but has yet to play at a major tournament. Carvajal missed Euro 2016 after suffering an injury during another Champions League final, where Real Madrid beat Juventus 4-1.

The 2018 FIFA World Cup will be held at 12 stadiums in 11 Russian cities between June 14 and July 15.

Spain, who lifted their only World Cup trophy in South Africa in 2010, were drawn in Group B and will play reigning European champions Portugal in Sochi on June 15, Iran in Kazan on June 20 and Morocco in Kaliningrad on June 25.