The former Real Madrid star has already won a trophy at Old Trafford.
Brazilian midfielder Casemiro has revealed his next ambition with Manchester United is to win more titles.
In their game against Newcastle United – which they won and lifted the Carabao Cup – the 31-year-old scored the opening goal in the 2-0 victory. This was United’s first trophy since the Jose Mourinho era.
"It was the end of a period where I was very happy [in Spain], and of course, when you change things, it's always a long-term project," Casemiro told FIFPRO.
"Thank God, things have gone well, and we won a title [League Cup] – but we know that we still have a lot of growing to do; we know we still have a lot of work to do to keep growing and to keep winning titles.
"Without a doubt, it is always important to win a title, especially the [League Cup], which is especially important for us because it has been a long time since the club had that feeling of winning one."
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The Red Devils have already been linked with a number of top-level centre-forwards.
As he hopes to win as many trophies as possible, the Brazilian has stressed what he and his teammates must do to be champions.
"We know we still have to keep growing and keep working with a lot of humility," he added.
"But I believe that with the technical committee, together with the players we have, we can continue to grow much more."
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Varane on the other hand, is expected to return earlier after he and Martinez got injured on Thursday.
Casemiro was appointed Brazil’s national team captain, probably given his experience and leadership qualities.
"I believe that leaders are not made, they are born," said Casemiro regarding the new role at Selecao.
"That comes from childhood, from when you are a baby. While you can adjust one thing or another, I believe leaders are those who are born with leadership, and that's it."
The former Real Madrid midfielder is available for Erik ten Hag in their Sunday clash against Nottingham Forest after serving a four-match suspension.