Following Barcelona's humiliating loss in the Champions League against Bayern in which they lost 8-2, Quique Setien lost his job, with former Barca player Koeman coming in as his replacement.
One of the major things the Dutchman has been tasked with is reducing the age of the squad, which is why he informed 33-year-old Suarez and 33-year-old Vidal that they were no longer part of the club's plans moving forward.
As Koeman embarks in his first period of taking Barcelona training this week, he has ordered the pair to train alone with only a fitness coach for company as he seeks to keep them away from his new philosophy as boss.
At the weekend, another veteran, Ivan Rakitic, left for Sevilla for a cut-price fee.
The treatment of Suarez and Vidal has been one of the things which has left Lionel Messi frustrated in recent weeks, as it was shortly after the Uruguayan, his friend, was told to leave Barcelona that Messi requested that his contract with the club be terminated,
The news catalysed plenty of rumours about where Messi might end up, but last Friday he announced a change of heart, saying he will stay with the Catalan side for at least another year as he wishes to avoid a bitter parting of ways with the club he has been with for 20 years.