Black Stars defender Mohammed Salisu has stepped up his rehabilitation process after sustaining an anterior cruciate ligament (ACL) injury.

AS Monaco had confirmed that the centre-back suffered a tear in his left knee during a match against Olympique Lyonnais in January.

Salisu, who underwent successful surgery, has now returned to the gym as he works toward full fitness.

Black Stars team doctor Prince Pambo visited the 26-year-old in Monaco as part of efforts to show support to injured Ghanaian players.

Salisu featured in seven FIFA World Cup qualifiers and scored two goals for the Black Stars.

However, it is unclear if he will be ready for the global showpiece scheduled to kick off on June 11.

Meanwhile, the Black Stars will face Panama in their Group L opener before subsequent matches against England and Croatia.