The goalkeeper says it was "difficult" for him when his appearances were few and far between.
The Honduran played with the likes of Gareth Bale and Luka Modric.
The two sides will meet in the quarterfinals after knocking out Manchester United and Tottenham Hotspur in the last round.
Newcastle United will face Sunderland in the Tyne-Wear derby on Sunday.
The England goalkeeper has signed a new long-term contract at the Britannia Stadium.
Chelsea interim manager Guus Hiddink addressed the media ahead of their clash with West Ham United at Stamford Bridge
Mauricio Pochettino's men crashed out of the Europa League at the hands of the Bundesliga side.
The defender has already experienced play-off heartbreak in the Championship.
However, the Black Cats boss has acknowledged the contribution of Jermain Defoe.
Toumani Diagouraga joined Leeds United from Championship rivals Brentford in the January transfer window.