Mario Mandzukic
Mario Mandzukic is expected to leave La Liga this summer Getty

Atletico Madrid striker Mario Mandzukic has reached an agreement in principle to move to Juventus during the summer transfer window although Manchester United are also monitoring the negotiations, according to Tutto Sport.

The Italian publication claims the Serie A champions are in "pole position" to secure the services of the Croatian forward but suggest United still have much to say in the negotiations as Juventus are yet to reach an agreement with Atletico Madrid to complete the deal.

The Daily Mail recently reported the striker has been offered to Louis van Gaal's United side as a potential replacement for Radamel Falcao.

More about Mario Mandzukic

Atletico Madrid are likely to part ways with him this summer as manager Diego Simeone recently confirmed he was planning an overhaul in his attack ahead of next season, with both Luciano Vietto and Carlos Tevez on his shopping list.

Mandzukic's agent, Cvjetkovic, later denied Atletico have urged him to find a new club while claiming the Croatia international is ready to stay at the La Liga giants next season.

"Mario was unhappy recently because he had stopped scoring and that affected him but that was also down to Atletico Madrid. In spite of this, this Atletico side still qualified for the Champions League and won the Supercopa de Espana, so there's no reason to think he's totally unsatisfied," he said, according to AS.

But TuttoSport claims Mandzukic's days at the Vicente Calderon are numbered as the player is so aware Atletico do not want him next season that his agent is already looking for his next destination.

The Italian publication claims the striker has agreed a deal in principle to join Juventus for around €4m a year in order to replace Tevez, as the former Manchester United and City star is ready to leave the club either to move to Atletico Madrid or to go back to Boca Juniors.

Nevertheless, TuttoSport insists Juventus still need to reach an agreement with Atletico Madrid, with the Spaniards demanding around €30m (£21.5m, $33.6m) to sanction the striker's departure.

The Italian newspaper adds the problem for Juventus is United are also monitoring the situation.

Van Gaal is looking for a striker to replace Falcao and, even though the Mirror recently claimed Harry Kane is his top priority, the Dutch boss may turn his attention to the Atletico Madrid hitman in case Tottenham refuse to negotiate the departure of the England international.