City have four senior goalkeepers on their books, which is one too many, so it is somewhat of a surprise that they are being heavily linked with Donnarumma.Reports suggested Pep Guardiola's side have agreed a deal to sign him, but sources close to Donnarumma have told BBC Sport this is not the case and that they have not spoken to City.Ederson has been heavily linked with a move to Galatasaray but City sources have said they want the Brazilian to stay in Manchester and there have, so far, been no bids or interest.The 31-year-old is entering the final year of his contract at Etihad Stadium and said at the Club World Cup in June that his "future is here".That could change if the club were to receive an offer that is worth considering.City's competition for the goalkeeping jersey is extremely healthy, with James Trafford coming in from Burnley and Marcus Bettinelli signed as third choice this summer.It means Stefan Ortega's career at the club appears to be over, with City open to offers for the German goalkeeper, which would mean they would need to sign a replacement should Ederson depart too.That road leads back to Donnarumma and although there has been no contact between the parties so far, it may change by the end of the month.Manchester United always knew it was impossible to address all the shortcomings in Ruben Amorim's squad in one transfer window.There were initial soundings around Aston Villa's World Cup-winning goalkeeper Emiliano Martinez early in the summer but that didn't go anywhere and since then, United have maintained their focus on attacking positions.Heading into the summer few expected the club to make three big-money signings without selling anyone significant. But now they have managed it, they do need to look at off-loading – and have essentially decided at present, any available finance will be directed at addressing the central midfield situation, not a new goalkeeper.That situation is interesting anyway. Andre Onana is expected to be fit for Sunday's Premier League opener against Arsenal but his deputy Altay Bayindir has not made a move as anticipated after he was left out of the Europa League final starting line-up.Veteran Tom Heaton has signed a one-year contract, so Amorim has experienced cover, while 21-year-old Radek Vitek and 19-year-old Elyh Harrison are very highly rated at Old Trafford and have just started loan spells at Bristol City and Shrewsbury respectively.Meanwhile, sources deny speculation that Chelsea could look at signing Donnarumma this summer.That's despite brief interest in AC Milan goalkeeper Mike Maignan in June with Chelsea insistent that they will go into next season with Robert Sanchez as the number one option - as well as Filip Jorgensen as a capable back-up able to provide serious competition.