SAINTS have completed the £15million signing of striker Adam Armstrong.

The 24-year-old arrives from Blackburn Rovers, putting pen-to-paper on a four-year deal at St Mary's.

Armstrong proved prolific in the Championship last season, netting 29 goals in 40 appearances in the second tier.

He has been linked with a move to St Mary's all summer, with one bid of £8million reportedly turned down, as the Lancashire side pushed for closer to £20m.

But, following the sudden departure of Danny Ings to Aston Villa last week, Saints went back in for Armstrong and saw a bid accepted on Monday.

He travelled down south to complete his medical and finalise personal terms.

Armstrong, whose contract with Blackburn was set to expire next summer, joined Rovers from Newcastle for £1.75million in 2018, with the Tyneside club said to retain a 40 per cent sell-on clause on any profit raised by the sale of Armstrong.

Boss Ralph Hasenhuttl said: “Adam was a big target for us this summer, so we are very pleased to have added him to the squad, especially as there was a lot of interest in him from other clubs too.

“He is at a good stage of his career for him to be coming here. He is a young, dynamic player who has developed well so far and already has good experience, as well as an impressive goalscoring record, and I believe we can now help him realise even more of his potential.

“He will bring a lot of qualities to our team, and he gives us another good option in attack, which will be important for us.”

Armstrong becomes the second new striker to arrive at Saints today, following the loan signing of Chelsea's Armando Broja this morning.