Chelsea boss Frank Lampard has concerns about the form of Kepa Arrizabalaga.
The Daily Mail says Chelsea paid a world-record 71.6million to sign the keeper, 25, from Athletic Bilbao last year.
He has since ousted David de Gea as Spain's No 1 but doubts remain about his club form, especially with set-pieces.
Lampard wants to add a new goalkeeper coach to his staff to work with Kepa.
Henrique Hilario was promoted to the role vacated by Maurizio Sarri's goalkeeping coach Massimo Nenci last summer.
