Jonathan Legear has had his contract at Blackpool terminated by mutual consent.
Midfielder Ben Watson admits he jumped at the chance to join Watford's promotion push, after joining from Wigan.
Former Australia international Vince Grella has announced his retirement after tearing his calf in his A-League debut for Melbourne Heart at the weekend.
Having signed with Heart in October, the 33-year-old defensive midfielder had to wait over three months to get on the pitch, coming off the bench in his side's 1-0 defeat at Western Sydney Wanderers.
But having injured his calf in Saturday's game, Grella has decided to retire after playing just 211 minutes of top-flight football in the past two years.
"After 17 years of professional football my body has told me it's enough," Grella said in a statement released by Melbourne Heart.
"I need to thank (Heart head coach) John Aloisi and the club for giving me a final chance to continue as a professional.
"I felt the club's culture was the perfect place for me to be and it's frustrating I won't have the opportunity to contribute to it and to John's first steps as a coach."
Grella joined Heart from Blackburn, having barely played in his final two seasons with Rovers before heading to the A-League.
He also enjoyed spells with Parma and Torino during his career and won 46 international caps, including appearances at the 2006 and 2010 World Cups.