Manchester United manager Jose Mourinho vouched for fellow Portuguese Marco Silva's competence and backed the new Hull City head coach to succeed ahead of Tuesday's first leg of EFL Cup semifinal between the teams at Old Trafford.

Critics have questioned the process behind Hull's appointment on Thursday of the 39-year old, who guided Portuguese club Estoril to second division title in 2012 before winning the Portuguese Cup with Sporting in 2015.

Silva led Greek side Olympiacos to their 43rd league title last season that was capped by a run of 17 victories from the first matchday, a European record in the 21st century.

After 20 games, Hull are at the bottom of the Premier League with 13 points, four away from safety.

Following Tuesday's cup tie, Silva will shift focus on the league as his side host ninth-placed Bournemouth on Saturday.