Mikel Arteta 's concerted efforts to sign Lisandro Martinez from Ajax appear to have forced Erik ten Hag to pile the pressure on Manchester United 's board.
The Gunners have already completed four signings this summer, including swooping for top transfer target Gabriel Jesus, but Arteta has by no means finished moulding his squad ahead of a renewed Champions League push next campaign. Having bolstered his attack by bringing in the Brazilian striker, the Arsenal boss now appears to be turning his attentions to other key areas in need of improvement.
With the Gunners' defence and midfield in need of reinforcements, the Spaniard is keen to acquire versatile Ajax ace Martinez - a player capable of covering in both areas. And Arteta's avid pursuit of the Argentine has forced Premier League rivals United into action.
