The Premier League has urged clubs to encourage their players to get vaccinated against Covid-19.
A surge in cases due to the omicron variant has significantly impacted the top-flight, with half of this weekend's games being postponed.
Premier League chief executive Richard Masters has stressed the importance of vaccination for footballers in a letter to all 20 clubs.
As reported by the Athletic, he wrote to clubs: 'We have collectively highlighted the importance of vaccination and it has never been more important.