#1 Dries Mertens

With Napoli sitting outside the top half of the table and on course for their worst Serie A finish since 2009, Dries Mertens looks set to leave the struggling Italian side with Manchester United favourites for the Belgian's signature. The Napoli forward would be the perfect signing for Manchester United with Merten's pace and finishing ability the perfect match to that of Marcus Rashford who would learn from the experienced current Napoli man.
Moreover, the forward has picked up a habit over the years of scoring against Liverpool, something that makes his signature all the more attractive for Manchester United. Mertens has scored twice in as many games against Liverpool this season in the Champions League for Napoli, including in a 3-0 home victory.
Although, Manchester United aren't the only club that have been linked with a move for Mertens this summer with the likes of Chelsea and Arsenal also rumoured to be interested in the forward who has recorded 15 goal contributions so far this season.
To conclude, with several players becoming free agents in the summer, many clubs will be desperately attempting to sign a potential bargain of the season ahead of the new campaign in order to improve their squad's.