Liverpool fullback Andy Robertson admits Scotland missed Kieran Tierney in Monday's loss to the Czech Republic.
The Arsenal star was missing in defence as Scotland were downed 2-0 at Hampden.
Robertson said after the game: "KT is a fantastic player and we ended up going with three centre-backs.
"You don't get the drive of KT. He overlaps me and sometimes he's the furthest forward. He just wasn't right and didn't make it. It's day-by-day unfortunately. He's giving himself every possible chance to play.
"It's important he doesn't take any risks and hopefully he's ready for Friday [against England]."
