Arsenal landed the biggest deal on transfer deadline day after meeting the £45million release clause in midfielder Thomas Partey’s Atletico Madrid contract.

The Gunners tweeted “Welcome to the Partey!” shortly after Atletico confirmed they had met the valuation for the Ghana international, meaning “the player has unilaterally terminated his contract with our club”.

Lucas Torreira completed a loan move in the other direction while Matteo Guendouzi joined Bundesliga outfit Hertha Berlin on a season-long loan deal.

Manchester United signed Uruguay striker Edinson Cavani and Brazil defender Alex Telles as they moved to strengthen their squad in the wake of Sunday’s 6-1 humiliation by Tottenham.

Cavani, who has signed a one-year contract with the option to extend for a further year, moves to Old Trafford on a free transfer following his release from Paris St Germain this summer.

Cavani said on the club website: “Manchester United is one of the greatest clubs in the world, so it is a real honour to be here. I’ve worked really hard during the time off and I feel eager to compete and represent this incredible club.”

United are understood to have agreed a fee for £13.5million plus £1.8million in potential add-ons with Porto for left-back Telles.

Telles told his new club’s website: “To join a club with the prestige of Manchester United is a huge honour.

“You have to work hard to get to this moment in your career and now I am coming to this club, I can promise that I will give everything in my heart to be a success here.”

Tottenham midfielder Ryan Sessegnon has joined Bundesliga outfit Hoffenheim on loan for the rest of the season.

The 20-year-old struggled to make an impact since joining Spurs for £25million last summer and was sent out to get some game-time.

Wolves defender Ruben Vinagre completed a season-long loan move to Olympiacos, with an option for the Greek champions to make the deal permanent.

Southampton allowed Sofiane Boufal and Guido Carrillo to leave on free transfers to Angers and Elche respectively, while defender Wesley Hoedt rejoined his previous club Lazio on loan.

Leicester forward Rachid Ghezzal joined Besiktas on a season-long loan. The Algeria international spent last term on a temporary deal with Fiorentina.