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(Image: GETTY)

The Baggies reportedly offered £26m for the midfielder which has been snubbed by the Portuguese giants, according to The Sun.

It's suggested Liverpool and Manchester United have also been monitoring the influential ace.

(Image: GETTY)

However, Tony Pulis is said to be long-term admirer of the 24-year-old.

And the experienced boss has seized the initiative after being given the green light to swoop by the club's new Chinese owners.

Pulis was in the market for Carvalho in the summer - but that approach was also knocked back by Sporting.

(Image: GETTY)

Italian outlet Calcio Mercato suggested earlier in the season that Jose Mourinho wanted to sign Carvalho this month.

And Portuguese publication A Bola reported that United sent scouts to watch the Euro 2016 winner in September.

Manchester City, Arsenal, West Ham and Chelsea also had spies tracking his progress earlier this term.