It would represent Vincent Kompany's first piece of first-team incoming transfer business as Clarets boss, and a critical signing too having seen centre-backs Ben Mee and James Tarkowski depart.
Arsenal defender Daniel Ballard is joining Burnley in a £2million deal this summer
Arsenal have also agreed a sell-on clause and matching sale price clause for Ballard (left)
Gunners academy product Ballard has never played a competitive game for the north London side but has impressed out on loan at Bloomfield Road and The Den.
He made 33 appearances for Championship side Millwall last term, having initially impressed in 30 League One matches for Blackpool in 2020-21.
That goes with the 15 caps he has earned for his country following his debut in 2020 in the Nations League against Romania.
Another Arsenal defender Nuno Tavares is a loan target for Marseille.
He has impressed out on loan at Millwall (left) in 2020-21 and at Blackpool last season
It would represent Vincent Kompany's first piece of first-team incoming transfer business
The Portugal U21 international only joined the Gunners last summer in a £6.8m deal from Benfica, but endured a mixed first season in English football.
Atalanta and Real Sociedad have also been credited with an interest, with the Italian side admitting their interest earlier this week but hinting they could be priced out of a move.
Lee Congerton, the head of senior recruitment at the Serie A side, said: 'I've followed Tavares since he was playing for Benfica's youth team, he's a strong player.
'But Tavares is under contract with Arsenal - and it's really difficult to sign players from Premier League clubs.'
Arsenal are believed to be open to loaning Tavares out for the season, but any move is likely to be contingent on their success in bringing in a replacement, with the Gunners still pursuing a deal for Ajax defender Lisandro Martinez.
Another Arsenal defender in left-back Nuno Tavares is a loan target for French side Marseille