👋 A new man in net...@sarkicmatija is a #Millwall player!
— Millwall FC (@MillwallFC) August 3, 2023
"Matija is another strong addition to our squad and we are delighted that he has chosen to join us on a permanent basis, especially given the level of interest in him from other clubs this summer," Alex Aldridge, Millwall's director of football operations and recruitment, told the club website.
"He is a player who is well known to our goalkeeping coach Andy Marshall from the successful time they had working together at Birmingham – where Matija won the Player of the Year award - and now we are excited to see the best of him in a Millwall shirt."