Matt Miazga (right) has been a rock in the New York Red Bulls defence

Chelsea are on the verge of completing the signing of New York Red Bulls defender Matt Miazga, according to Sky sources.

The 20-year-old centre-back is highly rated in Major League Soccer and Sky Sports News HQ understands he is having a medical ahead of a £3.5m move to Stamford Bridge.

Any transfer should be made easier with Miazga not requiring a work permit because he owns a Polish passport.

He has grabbed the headlines in the United States having already played under Jurgen Klinsmann for the national team and during the last MLS season scored against cross-city rivals New York City FC.

Miazga is regarded as one of the most promising young talents in American football having made his mark on the international stage at last summer's U20 World Cup.

He has also represented the United States at the U18 and U23 levels.

It seems Chelsea have beaten off competition in the Premier League with Leicester and Stoke being reported in the United States at the end of last year to have been interested in the 6ft 4in defender.

The news may be of concern to defender Gary Cahill, who has struggled to cement his first-team spot under new manager Guus Hiddink.

Several newspapers have reported Cahill is keen on a Stamford Bridge exit to boost his chances of playing at Euro 2016. The 30-year-old England centre-back last played in the Premier League on Boxing Day.