The summer transfer window is upon us, and clubs across Europe are looking to strengthen their squads for the upcoming season. One team that has been heavily linked with some major signings is Paris Saint-Germain (PSG), who have already made a few key additions to their squad this summer.

One of PSG's most notable signings so far has been goalkeeper Gianluigi Donnarumma, who joined from AC Milan on a five-year deal. The 22-year-old has been tipped to be one of the best goalkeepers in the world in the future, and he will certainly add some much-needed depth to PSG's defense.

Another player that PSG have been linked with is Manchester United defender Harry Maguire, who is currently out of contract at Old Trafford. Maguire is a highly-rated center-back, and his departure could leave a significant void in the Red Devils' defense. PSG have reportedly shown interest in signing him, and if they do manage to bring him to the Parc des Princes, it would be a big boost to their defensive capabilities.

There are also reports suggesting that PSG are interested in signing Real Madrid midfielder Federico Valverde. Valverde has been a regular starter for Los Blancos, but with the arrival of Eden Hazard, he may find himself under pressure for first-team football. If PSG can sign him, it would be a huge coup for the club and a great addition to their midfield.

Overall, the summer transfer window is set to be a busy one for PSG, as they look to strengthen their squad ahead of the new season. With the likes of Donnarumma and Maguire on the horizon, there is no doubt that PSG will be looking to make some serious waves in European football.