Barcelona is working to reinforce the CB. Tomiyasu, who can perform well in both CB and RSB positions, is an ideal player for Barcelona, as Dest may leave Barcelona in the summer as well. Xavi wants him.
Arsenal wants a player with utility. If Barcelona makes an offer to Tomiyasu, it can be resolved by a transfer by trading with Frenkie de Jong. Tomiyasu is considered worth it, and this deal is beneficial to both clubs. https://twitter.com/5chan_nel (5ch newer account)