Trafford, 23, started the season as first choice after rejoining from Burnley in the summer and played the opening three Premier League games, but has been a substitute since the deadline day arrival of Gianluigi Donnarumma from Paris St-Germain.
“One of the reasons why we want to go through in this competition is because they all have to be ready in case we need in the Premier League and the Champions League.”
Everton’s Jordan Pickford has won 80 caps and is England’s undisputed number one, currently on a record run of nine consecutive clean sheets, although there is a difference of opinion as to whether he or Trafford is the most expensive British goalkeeper.
City said that traffford move was worth £27m plus add-ons, but Burnley sources put the figure at £31m plus add-ons and a sell-on clause.
The latter figure would break the previous record of £30m which Everton paid Sunderland for Pickford in 2017.
Guardiola said he has spoken with Trafford and “other players” when asked if there were concerns about game time in a World Cup year.
Guardiola added: “We have an incredible keeper. For England, sooner or later, he will be the one.
