If ten Hag gets Timber (with the greatest respect I hope he doesn't, simply because I feel we really need a left footed centre back) then I hope we don't play him right back. He is a centre back who can play right back and not the other way around. He has only had 4 appearances for Ajax at right back this season and that was down to injuries. To me, it'd be like playing Lindelof there, who I feel ETH could potentially use there if any injuries occur.
I feel if we are to replace Wan-Bissaka, who looks as though he may be going, it needs to be with an attacking right back. I feel the players below could be good rotational players with Dalot and wouldn't cost too much.
Nordi Mukiele
Matty Cash
Denzel Dumfries
Jeremie Frimpong
As for Bassey, I've seen him a few times and like others, I've been impressed. Maybe someone we should be keeping our eye on, but as it stands, I wouldn't say left back is a massive priority compared to the other positions we need upgrading, more notably in midfield.