Arsenal have announced the signing of Albert Sambi Mboyo Lokonga from Belgian club Anderlecht. The 21-year old has cost the Gunners a reported €17.5 million plus a further €4 million in add-ons.

The young Belgian is highly regarded in his home country as one of the best prospects. Lokonga will be the second summer arrival at the Emirates after Nuno Tavares arrived form Benfica.

Arsenal technical director Edu said: “We are delighted Albert has signed with us, as there was a lot of interest in him and he was a big target for us. Albert is a player we’ve been tracking for some time, and he will bring us strength in depth in the centre of midfield. We look forward to his continued development with us.”

Mikel Arteta said: “Albert is a very intelligent player who has shown great maturity in his performances during his development. He has been coached well by Vincent Kompany and his team at Anderlecht. I know Vincent very well and he talks so highly about Albert and the positive impact he had to Anderlecht in recent seasons. We’re confident Albert’s ready for the next stage in his development and we’re looking forward to welcoming a new member to our squad with his quality and presence.”

The midfielder has joined on a four year contract with an option of a further year. More signings are expected are Mikel Arteta is set to overhaul the Gunners squad.

Lokonga will wear jersey number 23