Millwall have signed former Bristol City goalkeeper Frank Fielding.
Millwall have had an initial bid for QPR striker Matt Smith rejected but are set to return with an improved offer.
Millwall have announced a new five-year deal with Huski Chocolate, who will become the club's main sponsor.
Millwall midfielder Ben Thompson has expressed his delight after he signed a new long-term contract with the club.
Millwall have released five players following the end of the Championship season.
Striker Lee Gregory is expected to join Stoke after confirming he will leave Millwall.
Wigan manager Paul Cook hailed his players for overcoming their poor away record to finish comfortably clear of the relegation zone.
Reece James is set to captain Wigan in Sunday's clash with Millwall at the DW Stadium.