Trading Beal doesn't solve their biggest problem, which is Wall's bloated contract.
Danny is "working on" the trade he will make during the season. He is considering his options, seeing who steps up/who doesn't, and montoring the situation around the league.
With the trend toward Big Duo, C's duo is Walker/Hayward (both all-stars at various times, Tatum not yet) which is just not as good as many duos out there. If that doesn't get it done, look for a mid-season move.