SAINTS are reported to have bid £8.7m for Dutch League star Dusan Tadic.
The attacking midfielder was fourth top scorer in the Erevidisie last season with 16 goals - two of which were scored in FC Twente's 4-1 caning of Ronald Koeman's Feyenoord.
In addition, the Serbian international was top of the list for most assists - 14.
Tadic is seen as an ideal replacement for Adam Lallana, as he can play on the left side of midfield.
Saints are also reported to have failed in a £5m bid for Koeman's former Feyenoord striker Graziono Pelle.
The Italian was second top scorer in the Dutch League last season with 23 goals.
The previous season, 2012/13, he was again second top scorer with 27 strikes - only beaten by Wilfreid Bony, then of Vitesse Arnham prior to his move to Swansea.