20, celebrated his goal against Burnley. A superb curling shot from Riyad Mahrez into the top corner made it 4-0 seven minutes from the end and Sane turned in a late fifth from a low Benjamin Mendy cross.
Pep Guardiola is not normally keen on buying players in the January window although City signed Aymeric Laporte at the start of this year and were also close to adding Alexis Sanchez and Riyad Mahrez.
Burnley boss Sean Dyche voiced some complaints after the game, starting with referee Jonathan Moss' decision not to send off City captain Vincent Kompany for a bad tackle on Aaron Lennon in the first minute.
Elsewhere, Tottenham Spurs start a demanding seven-game stretch in 21 days against a West Ham side on Saturday that have already proven to be at their best on the big occasion this season. "So we'll take it".
'Of course, there's no doubt how important he is for us'.
"The strikers press from the front and make sure we recover the ball fast so we don't concede too many chances".
After somewhat containing the defending champions for the opening half, Burnley shipped four goals after the break and the game turned on a contentious moment shortly after half-time.
City moved onto 23 points, ahead only on goal difference from similarly unbeaten Liverpool who, far from their best, were grateful for Salah's sharp first-half victor in their unconvincing slog at Huddersfield.
All of the top three remain unbeaten. That's pretty good given we got 100 points and people couldn't believe how good we were [last season].
Former City goalkeeper Hart returns to City with new club Burnley today.
The Spaniard told the then England No 1 it was a crucial part of his football philosophy to have a goalkeeper who was more comfortable with the ball at his feet and could build moves from the back.
A dramatic fightback from 2-0 down to beat Newcastle 3-2 before a two-week global break offered Mourinho a stay of execution, but the pressure is still on the Portuguese to close a seven-point gap on Chelsea, Manchester City and Liverpool at the top of the table. He also had a couple of unconvincing moments in his own box with rushed clearances but just about came out on top in his battle with Burnley's bruising forwards.
Elsewhere, Everton continued to climb up the table with a 2-0 victory at home to Crystal Palace - their third straight league win.
Newcastle are languishing in bottom spot after a 1-0 home loss to Brighton while Watford beat Wolves 2-0 and Bournemouth played out a goalless draw with Southampton.
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