The Gabon international, 23, is currently in red hot form and has notched six Ligue 1 goals already this season for Les Verts.
Aubameyang bagged 16 goals last season and was reportedly the subject of a 12million euros bid from a Premier League club on the last day of the summer transfer window.
St Etienne are riding high in fifth place in the French top flight but realistically could not afford to keep turning down bids for the ex-AC Milan forward, who cost Les Verts only £1.5million.
Aubameyang signed a permanent deal with St Etienne in December last year and has a contract at the Stade Geoffroy Guichard until June 2016.
Southampton may have been in the running for him in the summer, but boss Nigel Adkins now has a pressing need to shore up his backline while Liverpool are desperate to add a player with Aubameyang’s firepower to their squad.
Brendan Rodgers’ has sent his scouts to France to scout for a striker and it is believed they have been most interested in the St Etienne star.
Sunderland have vowed to 'rise again' after their relegation to League One was confirmed on Saturday afternoon.
Diego Simeone has admitted he expects Diego Costa to miss the first leg of Atletico Madrid's Europa League semifinal against Arsenal.
Brentford moved to within a point of the Championship play offs with a pulsating 2-1 win over west London derby rivals QPR.
Aston Villa kept their automatic promotion bid alive with a convincing 4-0 victory over 10-man Ipswich at Portman Road.
Middlesbrough further enhanced their quest for a Championship play-off place with a convincing win at fellow hopefuls Derby.