The Seasiders head to the capital off the back of consecutive 1-0 home wins against Hull City and Millwall.
But what team will Critchley pick at Craven Cottage? Here's our predicted line-up...
5. LB - Dujon Sterling
Without a recognised left-back, the Seasiders will have to be flexible. Sterling could start there having filled in so well last week.
6. CM - Callum Connolly
Ethan Robson will be pushing to start, but Connolly's defensive nous might just give him the edge.
7. CM - Kenny Dougall
Thankfully the Aussie wasn't called up for international duty, otherwise the Seasiders really would have been in trouble.
8. RW - Josh Bowler
The winger is in great form and scored the winner in the first fixture at Bloomfield Road in September.