Seaborne sees his deal with the Premier League side expire this summer and he is expected to leave St Mary's.
The 26-year-old found himself well down the pecking order at Saints this season and enjoyed spells on loan at Charlton and Bournemouth.
Now the Cherries, Ipswich and Wolves are weighing up moves for the versatile defender on a free transfer.
Seaborne made 13 appearances during his loan stint at Bournemouth and boss Eddie Howe is keen to make his move permanent.
However, they could face competition from Ipswich and Wolves for Seaborne as they look to bolster their defensive options for next season.