Alfredo Morelos could follow. The centre-back moved to Ibrox in 2018 under Pedro Caixinha but managed just 12 league appearances before moving back to Portugal.
On Thursday the defender signed a five-year deal with Porto, which he's described as the biggest move of his career. Cardoso said: "I have no words to describe this moment.
It's one of the happiest days of my life, without a shadow of a doubt. I still don't believe it."It's a dream come true to reach such a level, in one of the biggest clubs in the world.
I am very happy and ready to start working."I've worked for many years to have this opportunity and it finally came. I'm prepared to grab it.
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