Al-Hilal star Neymar sustained an injury during Monday's Asian Champions League Elite match and played only 29 minutes.
"Hopefully nothing too much... It's normal that after one year [out] this happens, the doctors had already warned me, so I have to be careful and play more minutes," Neymar wrote in an Instagram story.
He suffered a thigh injury in Al-Hilal's AFC Champions League clash versus Iran's Esteghlal FC on Monday, just two weeks after making his return to the pitch.
The 32-year Brazilian star came off the bench in the 58th minute but was subbed off with an injury in the 87th minute.
Playing at Riyadh's Kingdom Arena, the game ended 3-0 in favor of Al-Hilal as Aleksandar Mitrovic scored a hat-trick.
Last year, Neymar moved to Al Hilal from Paris Saint-Germain.
He led Barcelona to win the 2015 Champions League and two Spanish La Liga titles in 2015 and 2016.
The left winger also helped PSG reach their first-ever UEFA Champions League final in 2020.
