Sanchez has been benched in recent games after not finding the net so far this season and failing to have any genuine productive output.
Kilbane believes that this is not because Sanchez is not trying and cited the positivity of the Chilean’s play as evidence of this.
“Sanchez is a massive problem for Mourinho,“ Kilbane told Irish radio station Newstalk.
“He is trying his balls off. It is not working for him.
“He is passing forward. He is risk taking. It isn’t coming off for him.”
Sanchez joined United from Arsenal in January as part of a swap deal with Henrikh Mkhitaryan and the Chilean reportedly earns up to £500,000 a week before tax.
He struggled to adapt to life in Mourinho’s system at United, but he was given an allowance of time to adapt to his new surroundings on the assumption that he would find his feet.
After scoring 80 goals in 166 games for Arsenal, he achieved a mere 3 goals in 18 appearances last season at United.
Securing his signature was so expensive that it restricted United’s purchasing power in the summer window, and United needed Sanchez to make the step up this season.
He has not done so however, and already rumours are circulating of United angling for Sanchez’s departure.
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