Southampton in talks over huge free transfer signing a day after securing promotion back to the Premier League

Southampton are in talks to sign a Premier League star on a free transfer, according to stunning reports.

Southampton beat Leeds United 1-0 to secure promotion back to the Premier League at the first time of asking.

Adam Armstrong scored the only goal of the game at Wembley Stadium as the Saints made a swift return to England's top flight.

Their Championship play-off final win over Leeds triggered a £20 million permanent transfer.

And Russell Martin's side are already looking at other transfer targets ahead of rubbing shoulders with England's elite clubs.

According to The Daily Echo, Southampton are in talks to sign Adam Lallana on a free transfer.

The 36-year-old graduated from the club's famed youth academy and played for the club in the Premier League, Championship and League One.

He made 265 appearances across all competitions, scoring 60 goals before departing for Liverpool in the summer of 2014.

At Liverpool, he won the Premier League and Champions League, among other silverware.

Lallana transferred to Brighton upon the expiration of his Liverpool deal and is set to leave the Amex Stadium when his current contract runs down on June 30.

Ahead of becoming a free agent, the former England international could make an emotional return to Southampton a decade after his departure.

The report states that he intends to take time to reflect on this season before making his decision.

The midfielder watched his old side do the business as he was in attendance on Sunday.

Adam Lallana in action for Southampton. Image: Getty

This season, Lallana played 30 games in all competitions, including 25 league appearances.

Southampton boss Martin could call upon his services ahead of the new season as he said his team need to 'embrace the challenge' of playing his style in the Premier League.

"It's up to us to prove ourselves in the Premier League next season," he said.

"The style is something that myself and my players believe in, I won't change and I love what I do.

"We'll need to embrace the challenge without losing who we are."