Carrick says Baleba could debut before the September break after an ankle issue delays his United start.
Manchester United have landed Baleba, but fitness doubts, valuation and squad balance still define the deal.
United’s left-back search is narrowing, with Balde, Salinas and a possible delay all under consideration.
Amad Diallo missed out for United against Hull, with injury and late fitness issues forcing changes.
Arteta has eased fears over Guimaraes, saying the groin issue should not mean weeks out.
Guimarães is out for Arsenal’s opener, with Arteta turning to Rice and an early run of tough fixtures.
Carrick has updated United's injury picture, with De Ligt, Šeško and Mount all under close watch.
Arteta faces a late fitness call on Guimarães, while Arsenal wait on Saliba, Timber and Konsa.
Haaland leads the field again, but Solanke, Palmer and others could shape the 2026/27 Golden Boot race.
Éderson says he still cannot explain why his proposed move to Manchester United fell through.