The Senegal-born defender, 24, can play at either right or left back and has represented? France at Under 21 international.
Dabo joined Sevilla on a free transfer from French club Saint-Etienne last summer but could be available for just ?2m as his club look to raise transfer funds.
On the move: Mouhamadou Dabo (right) could be set for a move to England
Villa played both Luke Young, the former England defender, and Kyle Walker at right-back last season.
But with Walker returning to parent club Tottenham, Villa are in the market for another defender.
On the move: Swansea have had a bid for Danny Graham (left) accepted
Swansea meanwhile are keen to strengthen their side after winning promotion to the Premier League via the play-offs.
Fifteen of the club's players are due to be out of contract soon while the Swans have had a club-record ?3.5m offer accepted for Danny Graham, the Watford striker.
?Ex-England boss McClaren set to hold talks over vacant Aston Villa hotseatVilla winger Young set to complete ?20m move to champions Man United Got him! Graham heading to Swansea as Watford accept improved ?3.5m bidAll the latest Aston Villa news, features and opinion
?Explore more:People: Danny Graham, Luke Young Places: United Kingdom, France
Source: Daily Mail
Source: Daily Mail