Rafa Benitez has a worrying fitness concern ahead of Newcastle's game against Leicester

However, there was no sign of Salomon Rondon in a gallery of training photographs published by the club's official website yesterday.

The striker was forced off against Crystal Palace last weekend with a thigh injury.

Rondon was withdrawn at the break after struggling through the first half and replaced with Joselu.

"He was not feeling well," said United manager Rafa Benitez. "It’s not a precaution, as he couldn’t continue.

“You could see that he was uncomfortable in the first half.”

Joselu – who started the club's last home game against Arsenal – is on standby to deputise if Rondon fails to prove his fitness.

Winless Newcastle are 18th in the premier League table, while Leicester are ninth.