Chelsea captain John Terry has insisted he has not been assured of a starting spot by Jose Mourinho this season.
The former England defender often found himself overlooked by Rafael Benitez in the latter part of the previous campaign as he struggled to maintain his fitness.
Terry has played the full 90 minutes in each of Chelsea's opening Premier League games this season, but remains aware he will have to impress to cement his place in the XI.
"(There are) no guarantees you will be in the side, nothing," Terry told Sky Sports Radio.
"Whether you are captain or not, he made that very clear from day one."
Chelsea face Manchester United on Monday night in an early meeting between two clubs expected to be challenging for the title come the end of the season.
However, Terry does not expect the result to have too much of a bearing on the final standings.
"I don't think it is going to make or break the season," he added. "It could be one of them - a head-start for either side.
"But we have a good record going to Old Trafford over the last few years and that will serve us well.
"Obviously it is David Moyes' first game at the stadium so we are expecting quite a hostile atmosphere anyway.
"But we will go there and look to stay solid for the first 10 or 15 minutes anyway. We know it is going to be a tough place to go and they have had a good win against Swansea.
"But the two wins for us will serve us well and we go there full of confidence."
|20||R. van Persie|
|Coach: D. Moyes|
for A. Valencia 66'
for D. Welbeck 78'
|Wenger sees Giroud wrongs|
|Premier League schedule a ´disgrace´, says Poyet|
|Championship Review: Bournemouth stay top, Heskey scores on Bolton debut|
|Hughes lauds Bojan performance|
|Koeman: Saints marching on|
|Pardew rues referee error|
|Arsenal 2 QPR 1: Sublime Alexis secures the spoils|
|Martinez questions Walters decision|
|Poyet laments Sunderland mistakes|
|League One Review: Swindon cruise to win over Walsall|
|Irvine aware of need for improvement|
|United still doing ´very bad things´ - Van Gaal|
|Lambert proud of players despite Swansea defeat|
|Warnock bemoans Palace defence|
|Bruce hails Hull´s spirit|
|Pochettino relieved to come away with victory|
|Dyche: We had our pocket pinched|
|Monk hails Fabianski performance|
|Pearson demands greater concentration from Leicester|
|Kompany set for City return|
|Rodgers hails character after battling win|
|League Two Review: Ainsworth frustrated by Luton, Shrewsbury go top|
|Everton 0 Stoke City 1: Lacklustre Everton slip to defeat|
|Sunderland 1 Hull City 3: Triumphant return for Bruce|
|Burnley 0 Liverpool 1: Sterling wins it at Turf Moor|
|Leicester City 1 Tottenham 2: Eriksen piles misery on Pearson´s men|
|Manchester United 3 Newcastle United 1: Rooney extends hosts´ streak|
|West Brom 1 Manchester City 3: Three and easy for in-form champions|
|Swansea City 1 Aston Villa 0: Hosts break Boxing Day duck|
|Crystal Palace 1 Southampton 3: Mane marks return with star performance|
|Allardyce upbeat despite defeat|
|Van Dijk happy at Celtic - Deila|
|Table-topping Chelsea delight Mourinho|
|Chelsea 2 West Ham 0: Mourinho´s men ease to victory|
|Suarez enjoying Messi, Neymar link-up|
|A-League Review: Garcia rescues point for Perth, Adelaide up to second|
|Poyet calls for mid-season break|
|Van Gaal rules out Januzaj move|
|Rodgers: Balotelli may have to get used to bench|
|Lallana: I was trying too hard|
|Walker juggles music, football careers in Sweden|
|Song to face ´brother from another mother´ Fabregas|
|Adriano announces Le Havre deal|
|Pardew braced for Old Trafford test|
|Lescott unfazed by City reunion|
|Tskhadadze appointed Georgia coach|
|United to finish top three - Ferdinand|
|Allardyce: Stamford Bridge stalemate saved my job|
|Southampton need three January signings, says Watson|
|Liverpool can make Champions League, says fanzine editor|
|Walsh: Hull clash crucial for Leicester|
|Toure, Aubameyang and Enyeama make shortlist for African gong|
|Docherty backs Chelsea to win two-horse race|
|Liverpool could benefit from Hyypia influence - Scales|
|Saudi Arabia name Asian Cup squad|
|Forty-year-old Cahill no problem for Postecoglou|
|Wenger criticism baffles Redknapp|
|Leicester must strengthen in window - Walsh|
|United not title contenders - Docherty|
|Koeman: Southampton youngsters will get a chance|
|Dyche empathises with Liverpool striker crisis|
|Cagliari turn to Zola|
|Rooney thanks Van Gaal for Christmas break|
|Cruzeiro offer Paulinho Tottenham exit chance|
|Carlisle´s wife grateful to Burnley|
|Katebe called up to Zambia AFCON squad|
|Cape Verde name AFCON squad|
|Finke names much-changed Cameroon squad|
|Grant omits World Cup troublemakers for AFCON|
|Blackpool striker Ranger goes AWOL|
|Allardyce relishing Mourinho meeting|
|Ashley fails to increase Rangers stake|
|Crystal Palace v Southampton: Koeman calls for focus|
|Warnock targeting striker in January|
|Chelsea v West Ham: Adrian vows visitors will attack|
|Heskey signs short-term deal at Bolton|
|Everton v Stoke City: Martinez eyes strong form|
|Juninho defends David Luiz|
|Burnley v Liverpool: Dyche defends Rodgers ahead of Turf Moor test|
|Arsenal v QPR: Wenger eyes festive momentum|
|Liverpool are growing in confidence, says Rodgers|
|Redknapp: Austin future could depend on survival|
|Martinez wants Everton consistency|
|Barca want Neymar until 2020, says agent|
|Jones undeterred by pressure of Liverpool starting role|
|Allardyce ´knows how to beat managers´ - Carroll|
|Jones playing for a new contract|
|China select Evergrande spine for Asian Cup|
|A-League Preview: Koren tips City to build|
|Khedira keen to fight for Real spot|