According to the exclusive report of the Portuguese media publico, former Real Madrid and Porto goalkeeper Casillas demanded more than 3.7 million euros of work-related injury compensation due to a sudden myocardial infarction during training in 2019.

reported that since October 2021, Cassi has entered a judicial lawsuit with the insurance company and Porto, and Porto has paid Cassi's salary and has pushed the liability to the insurance company. But the insurance company believes there is no evidence that Cassi's health problems are related to physical training on the day and therefore refuses to pay the compensation.

Casillas was hospitalized for a sudden myocardial infarction during a training class in Porto in 2019. He recovered and has been recuperating after being discharged. He announced his retirement due to heart disease in the summer of 2020.