The transfer window in Brazil remains open until February 28 and according to reports from Brazil, via the Manchester Evening News, Flamengo are willing to sign Casemiro on loan if United can cover the majority of his £375,000-a-week wages.
United beat Leicester 2-1 in the fourth round on Friday thanks to a controversial late goal from Harry Maguire and Red Devils boss Ruben Amorim will be keen to follow up that result with a victory over a struggling Spurs side.
The report states that some have questioned 'whether a change of plan' away from his preferred 3-4-3 formation would benefit the team, with it becoming a 'growing concern' that United will not improve unless Amorim considers some tactical tweaks.
Lisandro Martinez has hit back at criticism from United legend Paul Scholes, claiming the midfielder "wouldn't survive" in Argentina.
Speaking on The Overlap Fan Debate, via Sky Bet, Scholes said: "Even when he [Martinez] is fit, he's not good enough to win the Premier League with."
