Jose Mourinho has refused to throw in the towel in the Premier League title race after the 1-0 defeat at Chelsea left Manchester United 8 points behind Manchester City.
Kevin De Bruyne, Sergio Aguero and Gabriel Jesus all net as Manchester City equal a club record of nine successive league victories in a single season.
Premier League leaders Manchester City are expected to revisit their interest either in January or at the end of the season.
Kolasinac, who arrived on a free transfer from Schalke this summer, has quickly grown into an influential figure at the Emirates.
Manchester City are off to a flying start to the 2017/18 season as they remain unbeaten in all competitions. They are sitting on top of the league and Champions League group table.
Arsenal are massive underdogs going into the fixture, trailing the league leaders by nine points, with 10 games played thus far in the campaign.
Guardiola would not be drawn on another potential swoop for Sanchez before Manchester City entertain Arsenal in the Premier league on Sunday.
Arsene Wenger has confirmed that Sunday's trip to Manchester City will come too soon for David Ospina, Shkodran Mustafi and Danny Welbeck.
Gabriel Jesus was wanted by Real Madrid and Barcelona, while Manchester City's neighbours Manchester United were also in for the striker before he decided to move to the Etihad.
Keane insists that it is hard to be optimistic about the Reds as they have a lot of problems at the back which will eventually come back to bite them.
Liverpool beat Maribor to stay top of Group E and Sergio Aguero becomes Manchester City's all-time leading goalscorer in a thrilling 4-2 win over Napoli.
Kolasinac suffered an injury in Arsenal's win over Swansea City but Arsene Wenger is hopeful the full-back will be ready for Manchester City on Sunday.
Tottenham lost to West Ham United in the Carabao Cup and days later, suffered a defeat at the hands of Manchester United in the Premier League at Old Trafford.
Manchester City captain Vincent Kompany has yet to return to training and was omitted from the squad that travelled to Naples on Tuesday.
Sanchez, 28, came close to joining City during the summer transfer window, but the move broke down on deadline day.
The Citizens have been in brilliant form this season, winning nine of the 10 games thus far, while drawing the other.
Toure has won everything with City domestically but insists he has unfinished business in Europe and wants to win the Champions League.
Manchester City were expected to move for Alexis Sanchez in the January transfer window. However, they will now look to sign the Arsenal forward on a free transfer in the summer.
Arsenal left-back Sead Kolasinac suffered a recurrence of a hip injury during the Gunners' 2-1 victory over Swansea City on Saturday (28 October).
Arsene Wenger has previously admitted Arsenal could sell Sanchez in January, instead of losing him for free in the summer.
Manchester United will reportedly step up their scouting of Alex Grimaldo after the left-back impressed Jose Mourinho.
Round Five of the Carabao Cup draw will be held at Twitter's UK hub in central London at 4pm BST on 26 October, Thursday.