Brought in by Kevin Blackwell as United's
first choice keeper in the summer of the 2004/05 season, Neil offers Leeds a wealth of experience.
The Scotland international arrived at Elland
Road after a frustrating last year with Chelsea, where he would have been down the pecking order if he had stayed at Stamford
The former Wimbledon, Spurs and Scotland goalkeeper
was called into the Chelsea first team action eight times but was perhaps a little rusty after a year on the White Hart Lane
sidelines with previous club Spurs.
His arrival at Elland Road is also expected
to help the development of youngster Scott Carson. The pair work well together in training and knowledge is being passed down
to the man who it is expected will eventually take over the number one shirt for Leeds.
Sullivan gave Leeds fans an early example
of his expertise as a goalkeeper when he pulled off a brilliant penalty save in only his third game for the club against Wolves.