Swansea City still need to replace ex-captain Ashley Williams and striker Andre Ayew, says manager Bob Bradley.
Defender Williams, 32, played more than 300 times for the Swans after joining from Stockport County in 2008, but moved to Everton during the summer.
Ayew, 26, scored 12 Premier League goals for Swansea but was sold to West Ham after just one season at the club.
"All Swansea supporters know that they were important players last year," Bradley told BBC Radio 5 live.
"When players like that leave, not only do you lose the talent they had on the field, but both of those players were strong figures in the dressing room.