The club versus country row often causes friction, but midfielder Soren Lerby once found a way to satisfy both.
He played for Denmark and Bayern Munich on the same day. In different countries.
On the afternoon of 13 November 1984 - exactly 40 years ago - Lerby lined up for his national team in Dublin for their final qualifier for the 1986 World Cup.
Bayern, meanwhile, had a last-16 German Cup match at Bochum later that evening.
Photo: Soren Lerby of Denmark in may 1986 (Credit: VI Images via Getty Images)