Darren Fletcher and David de Gea have revealed the impact that new manager Louis van Gaal has already had on the Manchester United squad.
United have impressed in pre-season, reaching the final of the International Champions Cup in the United States after a 3-1 victory over Real Madrid on Saturday.
That was the latest sign of improvement under Van Gaal, who officially replaced David Moyes at Old Trafford last month after leading Netherlands to the semi-finals of the World Cup in Brazil.
The Dutchman has already stamped his authority on the squad ahead of the 2014-15 season, with United looking to respond to a disappointing seventh-place finish in the Premier League last term that saw them miss out on European football.
And Fletcher believes they are already showing signs of being able to challenge with the best sides again under Van Gaal.
"He [Van Gaal] demands a lot, but the players are responding to to it and enjoying playing in the new system and playing under him," said the Scotland international.
"We've got a fantastic team spirit - we were talking about it last night amongst ourselves.
"We're all close and we're all pulling in the right direction and we all want the best for Manchester United.
"We're disappointed with where we finished in the league [last season] and as a a result of that Liverpool, Man City, Chelsea - they all finished above of us.
"We're disappointed but next season we want to show what we're capable of and hopefully we can can do that."
That is a sentiment echoed by De Gea, with the Spanish goalkeeper revealing that Van Gaal's arrival has already had a significant impact on the mentality within the squad.
"He [van Gaal] is hard when he has to be. Really, he has surprised me," said De Gea.
"He is a great head coach and he is providing the team with a very good character. You can see it so far. I think we are totally different from last season.
"I think a lot of the big teams have been reinforced very well.
"We have also have been reinforced, with some players like Ander Herrera, and Luke Shaw on the left side.
"Right now, it could well be that we have one of the best squads."
|France 1 Brazil 3: Dunga´s men maintain winning run|
|Chile 0 Iran 2: Nekounam and Amiri down Copa America hosts|
|Premier League to share over £1bn from record TV deal|
|Morocco v Uruguay: Last chance to impress Tabarez for Copa champions|
|Iran 2-0 Chile: Nekounam and Amiri down Copa America hosts|
|Ivanovic braced for Ronaldo test|
|Bahrain 0 Colombia 6: Falcao stars in comfortable victory|
|Jones to Bournemouth leads loan deadline day moves in Championship|
|Bahrain 0-6 Colombia: Falcao stars in resounding victory|
|Malmo fined for poor pitch by UEFA|
|League Two Preview: Hartlepool aim to continue great escape, leaders Burton host Stevenage|
|France 1-3 Brazil: Neymar on target as Selecao triumph in Paris|
|Bulgaria v Italy: Verratti vows to be Azzurri´s midfield general|
|Kane primed for full England debut|
|Kone receives positive news over knee injury|
|Terry pens new Chelsea deal|
|PSG tie down Marquinhos|
|De Gea stamp was accidental - Skrtel|
|Villa hopeful over Xavi reunion|
|El Salvador v Argentina: Messi set for Roca reunion|
|Ghana v Senegal: Grant´s side looking to rebuild after AFCON disappointment|
|Ferdinand to serve extended touchline ban|
|League One Preview: Duo aiming to inspire Notts County revival, Alexander back at Preston|
|Hodgson keeps an eye on Sterling and Milner|
|Filipe Luis cools talk of Atleti return|
|West Brom to wear retro kit for Leicester clash|
|Netherlands v Turkey: Sneijder unconcerned by key absentees|
|Del Bosque wary of Ukraine threat|
|Israel v Wales: Pivotal fixture for both sides in chase for Euro dream|
|Bosnich backs Villa to beat drop|
|Walcott denies Wenger ´bust-up´|
|Hart: Aguero more difficult to face than Messi|
|Williams: I can´t see myself playing for anyone else|
|Coutinho eager to add more goals to his game|
|Khedira confirms Real exit|
|Messi attends NBA match with Argentina squad|
|United will qualify for Champions League - Bosnich|
|Mexico v Ecuador: Hernandez desperate to play|
|Podolski plays down Germany cameo|
|Bendtner: I could have scored four|
|Leverock family adds to World Cup exploits for Bermuda|
|Pele: ´Impossible´ for Neymar to replace me|
|MLS Preview: New England hoping to end drought|
|A-League Preview: Phoenix without stars for Sydney showdown|
|Klinsmann laments late collapse|
|Premier League clubs post first pre-tax profit for 15 years|
|Vokes relishing chance to link up with Bale|
|Dunga encourages Brazil to entertain|
|Dyke: FA to discuss Hodgson extension|
|Janko eyes history with Austria|
|Wilson urges Begovic to stay put|
|Strachan: Scotland have work to do|
|Sky´s the limit for Australia - Postecoglou|
|Low unhappy with below-par Germany|
|Scotland 1 Northern Ireland 0: Berra´s header settles dour contest|
|Germany 2 Australia 2: Substitute Podolski salvages draw|
|Denmark 3 United States 2: Bendtner hat-trick rescues Danes|
|Scotland 1-0 Northern Ireland: Berra the unlikely hero for hosts|
|Gobbi: Players will ´pay the price´ to keep Parma afloat|
|Rose withdraws from England squad|
|Germany 2-2 Australia: Podolski rescues draw for World champions|
|Denmark 3-2 USA: Bendtner hat-trick wins it for the Danes|
|Nigeria 0 Uganda 1: Late winner sours Enyeama landmark|
|Swaziland 1 South Africa 3: Bafana Bafana back to winning ways|
|Camp Nou to host Copa del Rey final|
|Labadie charged with violent conduct after biting claims|
|Bender keen to rekindle Bayern rivalry|
|Swansea eager to tie down Taylor|
|Varane learning from Real troubles|
|Forster ruled out for rest of season|
|Inter full-back Dodo has successful surgery|
|Verratti focused on future at PSG|
|Minnesota awarded MLS expansion team|
|Ibrahimovic slams ´b******t´ PSG exit rumours|
|Gibson withdraws from Ireland squad|
|Ozil convinced he can win Ballon d’Or|
|Costa: I take a beating from Premier League defenders|
|Canada v Guatemala: Floro seeks to develop winning mentality|
|Vermaelen returns to Barcelona training|
|Euro 2016 Qualifying Preview: Spain face big Ukraine test, Germany visit Georgia|
|Spain v Ukraine: Morata set for first competitive start|
|England v Lithuania: Hart urges Kane not to leave U21s behind|
|Monchengladbach snap up Hannover skipper Stindl|
|Khedira gives strong hint of Real exit|
|Skrtel banned for three matches|
|Brisbane Roar 1 Western Sydney Wanderers 4: Champions´ title defence in tatters|
|Sampdoria swoop for Ajax captain Moisander|
|Barnes: Sterling not ready for big-money move|
|Ferdinand: Ramsey appointment a gamble|
|Ideye hopeful of facing QPR|
|Lampard eyes MLS showdown with Gerrard|
|Ronaldo could face suspension over Clasico celebration|
|Hodgson expects more withdrawals|
|Schalke fans overwhelm Farfan after injury lay-off|
|Swedish third-tier club Dalkurd avoid Germanwings flight|
|Japan v Tunisia: Halilhodzic takes charge of hosts for first time|
|Schweinsteiger brushes aside captaincy pressure|
|Barzagli supports Conte call-ups|
|South Korea v Uzbekistan: Stielike searching for improvement|
|France wary of more balanced Brazil|