The former European Player of the Year took charge of the LA Galaxy in 2008 and found it difficult to adjust to the North American game.
EXCLUSIVE
Ruud Gullit says MLS has plenty for foreign managers to cope with and that several of the league's idiosyncrasies surprised him.
Gullit said the MLS youth system can be frustrating, with regulations preventing some of the free movement between youth teams and the first team that exists in Europe.
"Also, what is difficult for foreigners is that you have a salary cap, and I had to pay 22 players out of that salary cap," Gullit told Goal USA.