article_snippet.sent: Sergio Aguero Sergio Aguero looks on dejected during the defeat by United at Old Trafford .
article_snippet.sent: Aguero is settled in Manchester and signed a new five-year deal only last August.
article_snippet.sent: However, Aguero now has to think of Aguero.
article_snippet.sent: If the unthinkable happens and Manchester City slip outside the top four will one of the best players in the world be happy at a season without showcasing Aguero talents on the Champions League stage?
article_snippet.sent: Should either register an interest Manchester City would face a desperate battle to keep hold of their star man.
article_snippet.sent: While a move to Madrid may come with an enticing caveat in the shape of Gareth Bale, the loss of Aguero would be exceptionally difficult to recover from.
article_snippet.sent: While it is too early in his City career to pass judgement it would appear that the burden would be too much for Wilfried Bony's broad shoulders.
article_snippet.sent: The powers-that-be would no doubt have to open The former Swansea City man, who cost just £10m less than Aguero chequebook but who would come to an Aguero-less City?
article_snippet.sent: And, should The former Swansea City man, who cost just £10m less than Aguero sleepwalk out of the top four, who would dream of coming to a club without Champions League football?
article_snippet.sent: But will The former Swansea City man, who cost just £10m less than Aguero also want to come to a club shorn of Sportsmail idol?
article_snippet.sent: It is essential that keeping Aguero is top of that ever-growing list or else that ageing blue machine risks heading for an even bigger crash.
highlights_snippet.sent: But the biggest challenge could be keeping hold of Sergio Aguero .
  