Former Liverpool midfielder Lucas Leiva was pulled from training at current club Gremio after a potential heart issue was detected during routine screening.
The 35-year-old returned to his boyhood club in the summer, 15 years after leaving for Anfield as a 20-year-old back in 2007. 10 of those years were spent on Merseyside, where the combative midfielder racked up 346 appearances, winning the League Cup in 2012 and proving crucial in helping fellow Brazilians Phillipe Coutinho and Roberto Firmino settle into life at Liverpool.
Leiva completed a £5million move to Lazio in 2017, calling an end to a decade-long spell with the Reds. In an emotional open letter to fans upon confirmation of his departure, the midfielder described Liverpool as 'one of the greatest clubs in the world' but cited a lack of playing time as a deciding factor in his decision to leave.
