Report: Three Manchester United scouts watched Kieran Tierney against England

Scotland's Kieran Tierney in action with Slovenia's Rene Krhin

Manchester United are reportedly interested in signing Celtic’s Kieran Tierney in the summer transfer window.

Celtic's Kieran Tierney celebrates

Manchester United are interested in signing Kieran Tierney from Celtic in the summer transfer window, according to The Daily Star.

It has been reported that United had scouts watch Tierney in action for Scotland against England at Hampden Park in the 2018 World Cup qualifier last weekend.

Celtic's Kieran Tierney on the floor

According to the report, as many as three United scouts watched the talented and promising Scotland international left-back.

The Daily Star has also claimed that Celtic value the 20-year-old at £15 million, but the Bhoys are not looking to sell the youngster in the summer transfer window.

Tierney is one of the best young defenders in entire Europe and enjoyed a hugely successful 2016-17 campaign with Celtic.

The Scotland international played an important role in Celtic winning the Scottish Premiership, the Scottish League Cup and the Scottish Cup last season.

The Celtic left-back would be a brilliant signing for United, and it could be very tempting for the 20-year-old to play for the biggest club in England and work under one of the best managers in the world (Jose Mourinho).

Celtic's Kieran Tierney and Patrick Roberts celebrate after the match

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