Barcelona set out three conditions to re-signing Lionel Messi this summer

Barcelona are set to name three demands of Lionel Messi, if the World Cup winner wants to make a return to the Nou Camp in the summer.

Messi notched up his 800th career goal on Thursday night, on his emotional return to Argentina for the first time since celebrating their success in the World Cup.

Where he brings up the next milestones in his career is still up for debate, with his future at Paris Saint-Germain far from certain at the moment.

With his contract at the Parc des Princes coming to an end in June, some fans will not have been happy with his anti-France chants whilst on international duty.

Fans of the Ligue 1 leaders were already unhappy with the 35-year-old, following their Champions League exit at the hands of Bayern Munich recently.

The club do want to keep him however, and have entered contract negotiations, but the forward is yet to come to an agreement with the club.

He has also been linked with Inter Miami in the MLS or a possible law-changing reunion as Cristiano Ronaldo's rival in Saudi Arabia, whilst Barca would also like to see him return.

According to Mundo Deportivo, the seven time Ballon d'Or winner will have to make it clear he wants to return, accept a lesser role in the team and lower his salary, all in order to come back to the Nou Camp.

Messi and Xavi be reunited as player and manager. Image: Alamy

Messi and Barcelona president Joan Laporta are reportedly not on the best of terms, so the club chief wants the player to make it clear he wants to play there.

That information may have to come through Xavi, who remains good friends with the forward after their years playing and winning together.

The forward wouldn't be handed the captaincy back if he returned, with Robert Lewandowski, Marc-Andre ter Stegen and Ronald Araujo now amongst the leaders in the dressing room.

And lowering his wages might be the biggest obstacle to Messi returning, considering the club's well known financial issues in recent years.

Finances could also be why PSG wouldn't be as bothered to lose him as they might be, as they continue to be under threat of FFP breaches.

Messi's choice of club could yet be affected by any charge that Barca could be hit with, following allegations of corruption in Spain.