The 27-year-old Republic of Ireland international was told he could leave the club on Wednesday after arriving late for training on several occasions.
Keane said: "The problem is Liam´s time-keeping, it is as simple as that. It is nothing to do with Liam as a player or as a lad."
Copyright (c) PA Sport 2008, All Rights Reserved.
Do YOU want to write for GiveMeSport? Get started today by signing-up and submitting an article HERE: https://www.givemesport.com/writeforgms