The Dutch international knew all about Jol prior to his switch from AC Milan, having worked with his fellow countryman at Ajax.
"Martin Jol was a big part of the move as I'd worked already with him," he told the club's official website.
"I need a little bit of trust at the moment and he's a coach who believes in me. That is one of the big reasons why I came here."
Emanuelson made his debut for the Whites during Saturday's 1-0 defeat to Manchester United.