Death, taxes, and Pep Guardiola's love of a midfielder are among the certainties in a world that doesn't feel particularly stable at the moment.
Football is trying to proceed with as much normality as it can do. While there are no games and no guarantee over when there will be, clubs are using their time to get more of a handle on transfer options with FIFA having confirmed that there will be a window between the end of this season and the start of the next - whenever that may be.
The last few weeks have seen Manchester City linked again with a number of midfielders that are seen as being ideal candidates to come in and strengthen a department that looks likely to lose David Silva.
Lyon's Houssem Aouar, who City have shown interest in previously, and Napoli's Fabian Ruiz are both talented players that would improve many a team in Europe and could make their case for doing so at the Etihad.
However, the message from Guardiola and the club could not have been clearer all season that Phil Foden is expected to take over from Silva.
As the manager said in January when asked about it, things can change.
It is true that nobody can be certain how the transfer market will be affected by the suspension of football, and perhaps transfer fees will drop.
Ole Gunnar Solskjaer has suggested that "there might be just a situation there where you can exploit, and I know that we at Man United we are one of the biggest and financially well-off."
City would also fall into that category, so maybe they could strike a deal for a midfield player and take advantage of the reshaping of the game.
However, fundamentally clubs can expect to lose money - and substantially more if this season is unable to be completed.
It is as likely if not more so that teams will have to curtail their plans for a transfer window that has not been set yet, narrowing their priorities rather than allowing the type of sprees that City enjoyed in their first two summers under Guardiola. And if City already had Foden lined up to replace Silva, chasing a midfielder when they have had problems landing their key targets for successive years seems an unnecessary risk in a game where the odds have become starker.
City have needed to improve their defence all season, and that has to be the focus as they plan for the transfer window that remains unclear. Guardiola's love for midfield players will never go away and he can never be completely ruled out from bringing another one in, but something would have to change drastically in the market for the club to switch their priorities.