Manchester United's summer transfer window is shaping up to be a busy one, with the club looking to strengthen their squad ahead of their return to the Champions League. The focus is on bolstering their midfield and defense, with a particular emphasis on bringing in new center-backs. One name that has been linked with a move to Old Trafford is Strahinja Pavlovic, the 24-year-old Serbian international from AC Milan. According to reports, Pavlovic is a top target for United, with the club reportedly 'above all' in the race to secure his services. This interest comes as no surprise, given Pavlovic's impressive form over the past two years since his £15 million move from Red Bull Salzburg. He has been a key player for AC Milan, contributing five goals in 32 Serie A outings this season. With United's Champions League qualification secured, the focus now shifts to their managerial situation and potential signings. The club is expected to make at least five new additions this summer, with a midfield rebuild being a priority. However, a new center-back could also be on the agenda, and Pavlovic is believed to be one of the options being considered. The competition for a starting spot at United is fierce, with the likes of Benjamin Sesko and Bryan Mbeumo also in the mix. This has led to speculation about the future of some players, including Joshua Zirkzee, who has been linked with a move away from the club. Zirkzee, a £36.5 million signing, has struggled to secure a regular starting place at Old Trafford, with the arrival of Sesko, Mbeumo, and Matheus Cunha pushing him further down the pecking order. A report from Football Insider and ex-Premier League chief scout Mick Brown suggests that Zirkzee is 'edging closer' to a summer transfer, with a move to Everton being a 'real possibility'. Brown highlights Zirkzee's work ethic and ability to hold up play, making him a good fit for Everton under David Moyes. This potential move could benefit all parties involved, with Everton gaining a new striker, United raising funds through the sale, and Zirkzee getting more playing time. As United looks to strengthen their squad for the upcoming season, the race to sign Pavlovic is heating up, with United seemingly in the lead. The club's focus on midfield and defensive reinforcements, coupled with the potential sale of Zirkzee, indicates a busy and exciting transfer window ahead for Manchester United.