Martinez (thigh) has been spotted doing individual training while on holiday in Ibiza, according to Manchester United Forever.
Analysis:Martinez had left the pitch in the 44th minute of Argentina's World Cup semifinal against Spain with an apparent thigh injury, ending his tournament after starting all seven of the team's matches, during which he recorded two clean sheets, seven interceptions, 13 tackles and 36 clearances, along with a goal and an assist. He battled back from the ACL injury that wrecked his previous campaign, returning around November to play a key role in United's third place finish last season, making his fitness heading into the new campaign worth monitoring given that recent history. This early individual work is an encouraging sign that his recovery is progressing well ahead of United's Aug. 22 season opener against Hull City. Martinez is expected to continue building up his fitness before officially rejoining the squad.