Managers in Fantasy Premier League have a host of Transfer Deadline Day signings to consider ahead of Gameweek 1's kick-off at 19:00 BST on Friday.
The left-back is set to battle for a role in the first XI with Sead Kolasinac (£5.5m).
Tierney was a big success going forward for Celtic, scoring five goals and supplying 21 assists in 102 Scottish Premiership appearances.
The 22-year-old enjoyed a productive 2018/19 for Real Betis.
He scored nine goals and supplied a further four assists over 32 appearances in La Liga.
The Portuguese produced one goal and three assists for Juventus last term and will compete with Kyle Walker (£6.0m) for a role in the champions' starting line-up.
Full list of players added on 8/8
Michael Verrips (SHU) £4.5m
Heurelho Gomes (WAT) £4.5m