The United stars have all been in fine form over the last month, helping Eddie Howe's side record five wins and one draw to lift them into fourth place in the table.
Paraguayan winger Almirón has been sensational, bagging six goals in all - a brace at Fulham, one against Brentford, the winner against Everton, another decisive strike at Tottenham Hotspur and a superb curling effort in last weekend's victory over Aston Villa.
Trippier, meanwhile, has skippered the Magpies throughout the campaign so far, with his influence aiding Howe's side's fine start to the season. The England international has provided two assists in October, as well as helping to secure three clean sheets.
And midfielder Guimarães has been typically instrumental in the middle of the park, registering two assists as well as netting twice in the 5-1 win over the Bees at St. James' Park as he bids to play his way into Brazil's starting 11 ahead of next month's World Cup.
The Newcastle stars make up just under half of the shortlist, with Chelsea's Kepa Arrizabalaga, Manchester City's Kevin De Bruyne and Erling Haaland, Granit Xhaka of Arsenal and Leandro Trossard of Brighton completing the list of players nominated.
Voting begins at 11am GMT on Thursday, 3rd November, with the winner set to be announced at 11am GMT on Friday, 11th November. You can vote for Almirón, Trippier or Guimarães by clicking here.