With the disruption of the international break over, Premier League clubs will be looking for their late additions to make an instant impact this weekend.
Arsenal have pinned their hopes on record-signing Mesut Ozil, the only transfer fee paid out by the club in the recent market window.
The Germany playmaker is in line to make his debut at Sunderland tomorrow, after joining from Real Madrid for US$67 million on September 2.
"Of course, it is very physical here, but it is a man's sport and I am really glad to play in the best league in the world," Ozil said yesterday. "I want to prove myself in England."
After a losing start, Arsenal responded with back-to-back wins, and Ozil's arrival has further improved the mood at the Emirates Stadium.
"He has a style of play which can integrate with our style because we have a game which is based on movement, technical ability and creativity," Arsenal manager Arsène Wenger said. "He has all the attributes to be one of the leaders of our team."
Ozil's arrival was the sign of Arsenal exerting its financial muscle after years of limited spending.
"We had to go through some years when I signed a long-term contract where we had some restricted financial potential, and the target was to stay in the Champions League in this period," said Wenger, whose contract expires at the end of the season. "We managed to do it, and we are now in a strong position financially."
Manchester United had talked of making several additions to the squad to their Premier League title-winning squad. However, new manager David Moyes' only major recruitment was Marouane Fellaini from Everton on deadline day for US$43 million.
The Belgium midfielder joined after Moyes failed to land his first-choice targets.
"It is a big step for me," Fellaini said. "But I have played five years in England. I know the league and I know the players, so I don't think I will have a problem with this move."
He arrives at a team that has endured a patchy start to the season.
It started on a high with an eye-catching win at Swansea, but a drab draw against Chelsea and a loss at Liverpool followed to leave United going into tomorrow's match against Crystal Palace five points off the lead.
Liverpool are setting the pace so far as the only team with maximum points from a three straight 1-0 wins.
The 18-time English champions, who are at Swansea on Monday, have made their best start to a league campaign in 19 years.
Liverpool's big success over the offseason was not caving into Luis Suarez's demands by granting the unsettled striker a transfer, while bolstering their forward options on deadline day by signing Victor Moses on loan from Chelsea for the season.
But striker Daniel Sturridge, who has scored all of Liverpool's goals this season, is an injury doubt after missing England's World Cup qualifiers over the last week with a left thigh injury.
The strong start by Liverpool, who last won the title in 1990, has left the expected leading title contenders - Chelsea and Manchester City - trailing at this early stage.
Chelsea, who are two points behind, are at Everton tomorrow when City take on Stoke.
City are three points adrift of Liverpool along with Arsenal, Stoke and Tottenham.
The international break allowed Tottenham to settle following Gareth Bale's move to Real Madrid.
Manager André Villas-Boas will be hoping the loss in the last match at Arsenal proves to be a blip as he looks for his squad - reassembled by reinvesting the US$130-million windfall from Bale's move - to gel quickly.
"After the defeat at Arsenal, we want to be back alongside the top teams," Villas-Boas said ahead of tomorrow's match against Norwich.