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Amorim has a good track record with Sporting and as I said before, Manchester United have always had good luck when doing business with Sporting. And the fact that Amorim managed to beat City 4-1 shows that he can compete in the EPL. I don't know if United have the same quality as Sporting at the moment. But this is a good indication that United seem to be on the right track to getting back to success. On the other hand I agree with you. We can't claim Amorim has been successful because he hasn't played a single game with United. The game against Ipswich Town also can't be a reference because Ipswich Town are a lower level than United. I think if Amorim can be consistent with his performance in several games even if it's not a big match, then it can be said that Amorim has succeeded in making United better.
Amorim was quite successful with Sporting. We have seen that Sporting is performing well this season with Amorim's help. Amorim has been able to build a great squad. We can see Sporting's dominance in the last two seasons. Sporting won the Liga Portugal title last season. Sporting was 10 points ahead of second-placed Benfica in the table. Sporting is performing very well this season as well. Sporting has won all 11 matches in the Liga Portugal.
I don't think Manchester United's squad is weak at all. Their main problem was the coach's strange match strategy. Hopefully Amorim will take the necessary measures to stabilize Manchester United's performance. However, I don't think Manchester United's performance will improve dramatically this season.
Yes, Amorim was indeed successful when he was a coach at Sporting CP, his achievements at the club are indeed worthy of thumbs up. But the problem is that currently he is coaching a big team like Manchester United which has many star players in it. So I think the pressure will be much greater than when Amorim was a coach at Sporting CP. The reason is that managing star players at Manchester United is certainly not an easy thing. The reason is that the bad performance that occurred at Manchester United was also caused by Ten Hag's inappropriate strategy. However, another factor was also caused by Ten Hag who was not able to manage the players at Manchester United well. It was proven that while at Manchester United, Ten Hag had several bad relationships with his players. So, this will certainly be quite a challenge for Amorim.
Apart from that, if we look back at Ten Hag, when he was a coach at Manchester United, Ten Hag also had a very good record with the team he coached before joining Manchester United, namely Ajak. While coaching at Ajak, Ten Hag was able to bring extraordinary success, namely by winning 4 consecutive seasons in the Eredivisie. However, while coaching Manchester United, Ten Hag was unable to talk much, and almost every season Ten Hag actually made Manchester United's performance decline. So with this, I don't think Amorim will necessarily be able to achieve great success at Manchester United, if we compare it with the story of Ten Hag. Because even though Amorim does have a pretty good record at Sporting CP, this still won't be a big guarantee to bring a team as big as Manchester United back from its downturn.