Based on the provided content, it appears that Manchester United’s centre-back Lisandro Martinez has had a limited number of starts in the Premier League this season due to injuries, including a calf strain sustained in training. 

This has caused an ongoing defensive injury crisis for the team, with Martinez being a crucial player last season. The hope is that he will be fully fit for the FA Cup final against Manchester City, and there are indications that he may be on the verge of returning to the team. However, it is suggested that it might be beneficial to prioritize his recovery and protect him from further injuries until the final match.