Liverpool have told Loris Karius he must tough it out at Besiktas.

The Mirror says Besiktas are said to be considering trying to send Karius back to Liverpool because they are unhappy with his performances, according to sources in Turkey.

But it is understood the Super Lig side have not contacted Liverpool and there is no clause in his two-year loan agreement to end the deal early.

Liverpool agreed a £2.25million loan fee with Besiktas in August with a view to the Istanbul club signing the German goalkeeper permanently for £7.25million in 2020.

Boss Jurgen Klopp allowed Karius to leave ahead of Simon Mignolet in the summer following his £67million signing of Alisson to become his new No 1.