I have lost count of how many players didn’t get paid mate some on really good money and some on very little but it’s not the point yes the clubs would be struggling but so would some of the players doesn’t matter if it’s not there main source of income like most family’s etc they count on every penny they make to pay bills etc I have also heard some clubs making up some players losses from the season past with signing on fees this year to get them to resign
if there has been tax paid etc and a paper trail wouldn’t be to hard to get the money but if not declared etc and cash in hand it’s not so simple