The rest of the squad started this week but Koumas was given extra time after a visit to the dentist.
A statement of the Baggies official website read
"Jason Koumas will report for pre-season training with Albion on Tuesday, as scheduled by the club.
"We granted the Welsh international permission to return from his summer break later than the rest of the squad due to dental surgery.
"Jason has undergone two operations this week, on Tuesday and today (Thursday) and will report back after his pre-agreed recuperation period."
There's little official word on exactly what's happening. The haggle appears to be over money, firstly between the two clubs and then personal terms.
Let's hope the matter is sorted sooner rather than later and that Jason is a Bluebird.
The squad fly to North America on Wednesday for a two week trip to play four matches. When they return there will be less than two weeks to the start of the season and only one further pre season game to play.