Arsenal's former transfer chief Dick Law says he was left 'astounded' when he heard how much Manchester United were paying Alexis Sanchez and his agent after the Gunners agreed to a swap deal for Henrikh Mkhitaryan in 2018.
With Sanchez in the final year of his Arsenal contract during the 2017-18 campaign, the Gunners were desperate to get something for the Chilean in the winter transfer window after turning down a £60million bid from Manchester City before the start of the season.
United and Arsenal were able to agree to a rare straight player-swap deal, which saw long-time Gunners target Mkhitaryan head in the opposite direction.