Alonso is one of a number of managers who have become increasingly guarded when discussing team news in media conferences.
Last month, he said: “I prefer not to give more information than needed.”
On that occasion, his side went on to lose 3-0 at Brentford, having kept several injury concerns, including one involving Joao Pedro, under wraps.
Yet such is the popularity of Fantasy Premier League – a game played by more than 11 million people according to official figures – that many staff members, players and relatives of footballers also take part.
By identifying leagues or teams linked to players, staff or family members through the game, which provides an open database of participants, it can be possible to infer what is happening behind closed doors at various training grounds.
Previously, the highest-profile case involved Jack Grealish’s absence from Aston Villa’s match against Leicester City in February 2021.
Leicester’s manager at the time, Brendan Rodgers, admitted he had heard about the issue before the match, while Villa boss Dean Smith reportedly banned figures inside the club from playing FPL after the 2-1 defeat.
Later that year, Manchester City manager Pep Guardiola described the situation as “unethical and unprofessional”.
There have been many further examples, claiming to suggest players from clubs like Arsenal, Liverpool, Leicester and Newcastle made revelatory changes to their teams.
Often that information is widely shared on social media, but it is also known that some top FPL players will withhold information for smaller circles to gain a competitive advantage in the game itself.
BBC Sport was able to find accounts that trackers claim are linked to staff, players and family members at clubs across the Premier League.
One of the experts in finding these club-linked accounts is FPL Focal, who told BBC Sport: “I am sure there are many more that have not been found. I have noticed some players have started using aliases. I’ve also had a couple of requests over the years to remove accounts, which I have always respected.
“The FPL leaderboard is completely public, so it is straightforward to look players up. Verifying that an account genuinely belongs to a player takes a bit more time.”
