His arrival will raise further questions on Kepa’s place as Chelsea’s No 1.
Following the win over Brighton, Lampard made it clear that any incoming goalkeeper would only come in as competition to Kepa.
And the Chelsea boss has suggested he is still backing the 25-year-old to be his first-choice.
When asked what he can do to help Kepa, Lampard told Sky Sports: “To try and give him confidence because a goalkeeper absolutely relies on confidence.
“It’s a clear mistake, Kepa’s accepted that as he should do.