Boyd will be out of contract at the end of the season and the collapse of the deal with Forest could have seen Peterborough's prized asset leave London Road on a free transfer in the summer.
However, MacAnthony revealed that there is already a deal in place with another Championship club.
"I have told him that we would be delighted to give him a new contract but we have had a phone call from a bigger club in the Championship, who have a better chance of promotion and are run by some good people," MacAnthony said.
"They want to sign him when the loan window opens on February the 8th or 9th and they are not worried about his eyesight."
Boyd til oss eller?