Both deals are believed to have the option to buy at the end of each player's loan if they can impress, and the arrival of another midfielder will be a boost for the Saints ahead of the new season.
The 22-year-old midfielder played for Algeria at the World Cup in Brazil this summer and is a well balanced central midfielder that can play in an attacking role as well as a more defensive one.
He made 25 appearances for Inter Milan last season following a €5.5 million move last year and scored one goal with one assist during the campaign.
Taider is set to undergo a medical with the Saints on Tuesday morning and the deal is expected to be confirmed by tomorrow evening, providing all goes to plan.
Italian journalist Gianluca Di Marzio has claimed that Southampton will have the option to buy Taider for €9 million if he can impress in the Premier League next season.
The Algerian will be the fourth addition following Ronald Koeman's arrival in a turbulent summer that has seen five first-team stars leave the club.
Dusan Tadic, Graziano Pelle and Ryan Bertrand have already been brought in and Taider will be another young and talented arrival if the deal is confirmed, as expected.
Koeman confirmed that Taider would be arriving on Saturday, and he should be on the south coast tomorrow to finalise a deal.
Will Taider make an impact in the Premier League this season?