Some pundits have suggested Ruben Amorim should abandon his Manchester United plan and temporarily revert to a more pragmatic approach that will suit that players he inherited.

That would be a brilliant idea if you ignore that was the reason why the previous United manager was sacked, so Amorim must stick by his principles and accept the short-term pain.

Erik ten Hag suffered a nightmare start to his tenure, losing against Brighton and Brentford, and he compromised to produce results, but it was then difficult for him to implement the philosophy that everyone expected for the rest of his reign because he initially prioritised results over a style.

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It's not an exact science, but if a coach immediately implements their vision and has unwavering faith in what they believe from day one, that should help provide long-term success.

It's common sense when you think about it. Ten Hag needed to get results quickly after his arrival and he did, only that was at the cost of a long-term plan. And when the Dutchman eventually tried to make United align more with his ideal way of playing, it was too late and didn't work.

United were tactically dysfunctional last season and the same problems existed in the final months of Ten Hag's tenure. There was no style of play for supporters to get behind and fans were desperate to see an organised team, with every player on the pitch knowing their role.

Amorim has brought a new formation and system to Manchester and although there hasn't been an upturn in results as was hoped, it would be a huge mistake for him to change tactics.

That's not to say there shouldn't be changed. United slipped down to 14th in the table after their defeat to Wolves on Boxing Day, but the changes should be personnel and small tweaks within the system, not completely changing the formation to what the previous manager used.

For example, Amorim has leaned toward playing natural full-backs in the wing-back roles in the last few weeks and that hasn't worked, so it's logical for him to change personnel.

Amorim is putting square pegs in round roles and that will be the case until the summer transfer window when the squad can be overhauled and strengthened with players for the system.

United's head coach could play a formation that suits his current players, but recent history suggests that will get him sacked down the line and that's without mentioning it would be foolish for Amorim to bow down to multiple players who will have no future in his plans.

"I'd be amazed if they were still playing a 3-4-3 in a year's time," said Danny Murphy on Match of the Day last month. "This league's very, very different from continental leagues. We've only had Chelsea, in recent years, win playing that system and let's be honest, they had Kante and Matic.

"Two wonderful defensive midfielders in the middle of the pitch and [Diego] Costa up top with [Eden] Hazard supporting him and helping him as well. They don't have those players yet and how do you find them? It costs hundreds of millions to get the best players in the world.

"I think when you play three at the back against the majority of good teams in our league, who play three high, you end up being a five and that's really difficult. If Manchester United are going to get much better and competitive, I think that 3-4-3 will evolve into something else."

Amorim can't listen to the noise at Old Trafford and must stick to what he believes in.