The pair were sold by Nottingham Forest last summer before returning to the City Ground for the 2014/15 season on loan, Darlow making 42 league starts during the campaign and Lascelles 20.
Both would have fully expected to become Premier League players this coming summer but Newcastle's plunge down the table over the past few weeks will have given them cause for concern.
John Carver's side have lost eight consecutive games to leave themselves just two points above the relegation zone, supporter protests against owner Mike Ashley have intensified and Carver himself accused one of his own players of getting sent off deliberately at Leicester last weekend.
It almost makes the City Ground, scene of some managerial upheaval over the past few seasons, seem like a calm and ordered place to play your football!