The 19-year-old midfielder made his first team debut for the Royals last month when he came off the substitutes' bench in the FA Cup defeat to Stevenage.
After that game, D'Ath told Reading's official website: "I'd say I'm a box-to-box midfielder, I've been known for playing the attacking role too with the youth team but in the end I think I'll be a box-to-box midfielder.
"I'd be happy to go on loan, but if the gaffer wanted me here then that's fine too."
D'Ath, who progressed through the youth ranks at Reading, signed his first professional contract in 2009 and scored more than 20 goals in Reading's under-18 and reserve sides last season.
