Swansea City are aiming to complete deadline-day deals for Jamal Lowe, Bashir Humphreys, Kristian Pedersen and Josh Tymon.
Swansea have agreed a fee of about £2m for Stoke City's Tymon, 24, while defender Pedersen, 29, is poised to join on a free transfer from Cologne.
Centre-back Humphreys, 20, is close to signing on a season-long loan from Chelsea despite interest from Stoke.
Lowe, 29, is expected to rejoin Swansea on loan until January from Bournemouth.
Tymon will be a long-awaited replacement at left-wingback for Ryan Manning, who departed at the end of last season after failing to agree a new contract.