The Geordie pair were on loan at St Mirren in the second half of the season and helped the Buddies lift the Scottish Communities League Cup in March.
Newton and Dummett are not short on offers now.
They are free agents in the summer but have been offered new contracts by Newcastle, while St Mirren were so impressed by their performances and attitude that they want to sign them on permanent deals.
Newton scored in the 3-2 League Cup final win over Hearts at Hampden, while Dummett played 36 times for the Buddies, impressing at left-back.
What next? Champions League football with Celtic?