Celtic manager Ronny Deila insists Virgil van Dijk does not want to leave the Scottish Premiership leaders in January.
Celtic boss Ronny Deila says keeping his best players will take priority over acquisitions in the transfer window.
Bothrwoyd signed a three year deal with the option of the club releasing him after two years.
And the 31-year-old, who joined the side on a free transfer in the summer of 2011,now becomes a free agent.
Bothroyd made 18 starts and 13 substitute appearances in all competitions since joining the club and scored five goals.
A statement on the club's official website read: "The club would like to thank Jay for his contribution and wish him all the best for the future."