A club statement said Levante loanee Dwamena will undergo further tests to specify the extent of his illness.

"The Medical Services of Real Zaragoza have detected during the development of medical tests a health problem in the footballer Raphael Dwamena...," the statement said.

It is the second major health scare that Dwamena, 24, has suffered during his professional career.

It will be recalled that in August 2017, his then club FC Zürich had agreed a £10 million fee with English Premier League club Brighton & Hove Albion for the transfer of Dwamena.

He was set to join Brighton subject to passing a medical, obtaining a work permit and international clearance, however the deal fell through after Dwamena reportedly failed his medical due to a heart condition. He instead, remained an FC Zürich player.

At the time, FC Zürich maintained that the deviation detected "has been judged as being neither harmful to health nor compromising the performance of a top athlete".

He later joined La Liga side Levante UD in August 2018 before he was loaned out to Zaragoza for one year in July this year.