The 31-year-old recently handed in a transfer request.
“I have loved my 3 years at the club and it sadness (sic) me to write this but want use (sic) to here (sic) it from me first.”, Holt tweeted on Friday.
“Just to stop the rumour mill again. I have expressed to the board and the CEO that I want to leave the football club. Due to disagreements.”