Quique Sanchez Flores has warned Odion Ighalo will need a month to find his rhythm following his loan transfer to Manchester United.

Ighalo sealed a deadline day move from Shanghai Greenland Shenhua to Old Trafford until the end of the season, as Ole Gunnar Soslkjaer succeeded in his late scramble to sign cover for the injured Marcus Rashford.

Ighalo, who spent two and a half seasons at Watford before moving to China, scored 46 goals in three seasons in the Chinese Super League.

But Flores says the 30-year-old will need at least a month to recover his fitness and ready himself for the increased physical demands of top-flight English football.

He does not expect to see the striker, who has landed back in Manchester, making his first-team debut for a matter of weeks.

"Mainly, the problem is how they train in China," said Flores. "It is not the same as in England."

"Is he really ready for first-team matches in the Premier League because the physical difference is so big? He probably needs one month to recover the full rhythm.

Man United squad 2019-20 | Injuries, contracts and squad numbers 29 show all Man United squad 2019-20 | Injuries, contracts and squad numbers 1/29 We run you through Man Utd's squad for the 2019-20 season... AFP/Getty Images 2/29 David de Gea Squad Number: 1



Condition: Fit



Contract expires: 30/06/2020 REUTERS 3/29 Victor Lindelof Squad Number: 2



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Contract expires: 30/06/2023 Action Images via Reuters/Jason Cairnduff 11/29 Lee Grant Squad Number: 13



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Condition: (On loan at Estudiantes)



Contract expires: 30/06/2021 Man Utd via Getty Images 15/29 Fred Squad Number: 17



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Contract expires: 30/06/2021 Getty Images 20/29 Luke Shaw Squad Number: 23



Condition: Ankle injury (Ruled out)



Contract expires: 30/06/2023 EPA 21/29 Odion Ighalo Squad Number: 25



Condition: Fit



Contract expires: 30/06/2020 REUTERS 22/29 Timothy Fosu-Mensah Squad Number: 24



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Contract expires: 30/06/2020 Man Utd via Getty Images 23/29 Mason Greenwood Squad Number: 26



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Condition: Foot injury (ruled out)



Contract expires: 30/06/2022 AFP/Getty Images 27/29 Scott McTominay Squad Number: 39



Condition: Fit



Contract expires: 30/06/2023 Getty Images 28/29 Joel Pereira Squad Number: 40



Condition: Fit (on loan at Hearts)



Contract expires: 30/06/2021 AFP/Getty Images 29/29 Brandon Williams Squad Number: 53



Condition: Fit



Contract expires: 30/06/2024 Manchester United via Getty Images 1/29 We run you through Man Utd's squad for the 2019-20 season... AFP/Getty Images 2/29 David de Gea Squad Number: 1



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Contract expires: 30/06/2020 REUTERS 3/29 Victor Lindelof Squad Number: 2



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Contract expires: 30/06/2021 Man Utd via Getty Images 4/29 Eric Bailly Squad Number: 3



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Contract expires: 30/06/2020 EPA 5/29 Phil Jones Squad Number: 4



Condition: Knee injury (ruled out)



Contract expires: 30/06/2023 Man Utd via Getty Images 6/29 Harry Maguire Squad Number: 5



Condition: Fit



Contract expires: 30/06/2025 (plus option of one-year extension) Manchester United via Getty Imag 7/29 Paul Pogba Squad Number: 6



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Contract expires: 30/06/2021 Getty Images 8/29 Juan Mata Squad Number: 8



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Contract expires: 30/06/2021 Getty Images 9/29 Anthony Martial Squad Number: 9



Condition: Fit







Contract expires: 30/06/2024 Getty Images 10/29 Marcus Rashford Squad Number: 10



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Contract expires: 30/06/2023 Action Images via Reuters/Jason Cairnduff 11/29 Lee Grant Squad Number: 13



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Contract expires: 30/06/2020 Getty Images for International Champions Cup 12/29 Jesse Lingard Squad Number: 14



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Contract expires: 30/06/2021 Action Images via Reuters 13/29 Andreas Pereira Squad Number: 15



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Contract expires: 30/06/2023 Getty Images for International Champions Cup 14/29 Marcos Rojo Squad Number: 16



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Contract expires: 30/06/2021 Man Utd via Getty Images 15/29 Fred Squad Number: 17



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Contract expires: 30/06/2023 AFP/Getty Images 16/29 Bruno Fernandes Squad Number: 18



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Contract expires: 30/06/2021 Manchester United via Getty Imag 17/29 Diogo Dalot Squad Number: 20



Condition: Fit



Contract expires: 30/06/2020 AFP/Getty Images/Fabrice Coffrini 18/29 Daniel James Squad Number: 21



Condition: Fit



Contract expires: 30/06/2024 Man Utd via Getty Images 19/29 Sergio Romero Squad Number: 22



Condition: Fit



Contract expires: 30/06/2021 Getty Images 20/29 Luke Shaw Squad Number: 23



Condition: Ankle injury (Ruled out)



Contract expires: 30/06/2023 EPA 21/29 Odion Ighalo Squad Number: 25



Condition: Fit



Contract expires: 30/06/2020 REUTERS 22/29 Timothy Fosu-Mensah Squad Number: 24



Condition: Fit



Contract expires: 30/06/2020 Man Utd via Getty Images 23/29 Mason Greenwood Squad Number: 26



Condition: Fit



Contract expires: 30/06/2023 Manchester United via Getty Imag 24/29 Aaron Wan-Bissaka Squad Number: 29



Condition: Fit



Contract expires: 30/06/2024 Manchester United via Getty Imag 25/29 Nemanja Matic Squad Number: 31



Condition: Fit



Contract expires: 30/06/2020 Action Images via Reuters 26/29 Axel Tuanzebe Squad Number: 38



Condition: Foot injury (ruled out)



Contract expires: 30/06/2022 AFP/Getty Images 27/29 Scott McTominay Squad Number: 39



Condition: Fit



Contract expires: 30/06/2023 Getty Images 28/29 Joel Pereira Squad Number: 40



Condition: Fit (on loan at Hearts)



Contract expires: 30/06/2021 AFP/Getty Images 29/29 Brandon Williams Squad Number: 53



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Contract expires: 30/06/2024 Manchester United via Getty Images

"The good thing is he knows his body well, works hard on injury prevention and he is always working after training.

"I should say, also, that I felt in China, he gave exactly the same effort and quality as he gave me four years ago. We had the feeling in China that he could recover a high level with any team in Europe."