I think they did take a 10-20% pay cut but also referred some of their wages in future.
Swiss Ramble posted we've had 60m in deferred wages in the 2020/21 season. I think that mostly includes players who have renewed their contracts in October 2020 - FDJ, MATS, Lenglet and Pique. Possibly Busi and Alba as well.
[tw]1548917093957046273[/tw]
https://twitter.com/SwissRamble/status/1548917093957046273
According to Marca Frenkie's deferred wages in 20/21 were 11m (and further 5m last season). So if we'd add supposed 50m for Pique we'd already be at total 60m without taking other players into accounts.
Could be wrong and ofc we don't know exact numbers but would be surprised if we really owe Pique 50m in deferred wages for the past two seasons. It's more likely he's owed around the same as FDJ.