Transfer News and Rumors: Manchester United Chase World Cup Stars

Ante Rebic during the 2018 FIFA World Cup Final between France and Croatia at Luzhniki Stadium on July 15, 2018 in Moscow, Russia. The winger is on Manchester United's radar. Dan Mullan/Getty Images

Manchester United will try to improve Jose Mourinho's mood by ramping up their business in the transfer market in time for the new season.

Speaking to reporters on Tuesday during United's pre-season tour in the U.S., the United manager sounded incredibly frustrated at the lack of signings—but his fortunes could be about to change for the better.

According to The Independent, United have turned to Ante Rebic in their quest to recruit the winger Mourinho desperately wants. The Portuguese wanted to sign Ivan Perisic last summer but United and Inter Milan could not agree a deal. Perisic's price-tag has since sky-rocketed after an excellent World Cup.

Mourinho also wanted to be reunited with Willian, but Chelsea have already knocked back two bids from Barcelona and United are reluctant to sanction a bid for a player that will turn 30 in two weeks.

Rebic, who also had a good World Cup with Croatia, is cheaper and younger than both Perisic and Willian, but Bayern Munich are also said to be monitoring the Eintracht Frankfurt player.

Mourinho is also determined to strengthen his defensive options and French outlet RMC Sport suggests United are looking at Barcelona defender Yerry Mina, who was one of the star performers at the World Cup.

However, the Colombian has also attracted interest from Lyon and Everton who, according to Sky Sports, could be nearing a deal to sell Davy Klaassen to Werder Bremen. The Dutchman made only seven Premier League appearances last season and the Bundesliga club could offer him the chance to resurrect his career.

Meanwhile, The Sun suggests Real Madrid have turned their attention to Hugo Lloris as they continue to look for an upgrade on Keylor Navas. The 13-time European Cup winners will reportedly test Tottenham Hotspur's resolve with a $79 million bid, after struggling to reach an agreement with Chelsea for Thibaut Courtois.

For their part, the Blues are still exploring potential replacements for Courtois, with the London Evening Standard suggesting Chelsea have enquired about AC Milan's goalkeeper Gianluigi Donnarumma.

The Serie A giants have previously expressed interest in bringing Chelsea's club record signing Alvaro Morata back to Italy—where he spent two seasons with Juventus—and the Blues have indicated they would want Donnarumma to be included in a potential swap deal.

Morata, however, is not the only striker AC Milan are monitoring. The Rossoneri are also reportedly working on a deal to bring Juventus striker Gonzalo Higuain to Milan, with Leonardo Bonucci going the other way and returning to La Vecchia Signora after just one season.

New Chelsea boss Maurizio Sarri worked with Higuain at Napoli in the 2015-16 campaign and remains hopeful of bringing the Argentine to Stamford Bridge, in a deal that could be worth around $75 million.

Elsewhere, the Liverpool Echo reports Jurgen Klopp is keen to keep Daniel Sturridge at Anfield this season.

The 28-year-old's career has been beset by injuries and Liverpool sent him to West Bromwich Albion on loan in January. However, Klopp has reportedly been impressed by his attitude in pre-season and wants to give him a second chance.