UPDATED 11:33 24th August 2015
The internationally-capped midfielder has an excellent and growing reputation within the game.
Born in Germany, Williams made his way into football with hometown club Karlsruhe before stepping into professional ranks with SC Freiburg.
Having been handed a Bundesliga debut at the age of 20, he then celebrated his 21st birthday by playing away to Bayern Munich in the Allianz Arena.
He attracted interest from big-spending Bundesliga side Hoffenheim at the end of August 2011 and moved into a squad including the likes of former Royals Academy graduate Gylfi Sigurdsson. With an all-action style, technical ability and 100% commitment, he soon became popular with his new team's fans.
Having moved clubs he also quickly broke into the full US national team, with Klinsmann handing Williams a debut for U.S.A against Honduras.
Having impressed all in Germany he then made the move to Madejski Stadium in June 2013, making his Reading bow in the seasons opening day win against Ipswich.
He progressed through following seasons to become a mainstay in the starting XI, where by the end of 2015/16 he had accumulated over 90 league appearances during his stay.
It was that season during a home game against Blackburn that Williams scored what was voted as the Goal of the season, firing home a volley from the edge of the area that flew past stopper Jason Steele.