He coached later the youth and amateur squads of Trabzonspor before he was appointed manager of the main team in 1978.
However, Middlesbrough recognised his talents as a potential left back and Knowles was accepted into their amateur squad.
Team had started their operations as the amateur squad in 1950s.
Their Olympic success was helped by a wholly amateur squad, similar to other nations behind the Iron Curtain.
The Coupe du Trône is a football cup competition in Morocco open to both professional and amateur squads.
Despite a primarily amateur squad, the team finished fourth in the league during the 1989-90 season.
Yet, sales of the team's licensed merchandise soared, and lots of amateur squads started wearing teal, even though the Sharks played like jellyfish.
After his player career he started as coach of the amateur squad of Rapid.
There the team fielded a very young under-21 amateur squad and managed to reached the Quarter-finals, losing only to the host nation.
Before construction was finished in 2002, Wolfsburg played their home games at the 20,500 capacity VfL-Stadium, where the amateur squad still plays.