Newcastle will be without captain Jamaal Lascelles for this weekend's clash with Bournemouth.
The centre-back has been sidelined with a knee problem.
Manager Rafael Benitez said: "We had Longstaff and Elliot, now we have Lascelles, who is still feeling a little bit his knee, so we will not take any risks. We'll wait two or three days to see how he reacts.
"But Clark is available, so we lose one, but at least we have another one."