Phil Brown admits it was time for Hull City to part ways with Marlon King after the striker's loan was cut short.
King scored five goals in 22 appearances for the Tigers after joining on a season-long loan from Wigan Athletic in August.
However, he will spend the second half of the season on loan at Middlesbrough after a bust-up with Brown before last week's defeat by Arsenal.
The former Watford forward was unhappy at being dropped from the team for the game and Brown confirmed there was a row.
The Tigers boss had no hesitation in ending King's time at the KC Stadium as he will not tolerate public criticism of his team selections.
"We had an agreement with Wigan in case there was any interest in Marlon in the January transfer window," said Brown.
"If that was at Hull he could stay until the end of the season and make it a permanent deal.
"If it was elsewhere Wigan, ourselves and whoever could exercise the right for Marlon to move.
"There has been a well-document fall-out, although it was more of a disagreement about team selection.
"At the end of the day it is my decision. He can voice his opinion in private, one to one, but in front of the players it is a bit different.
"For me it was time to part our ways."