Felton's playing time is pretty sporadic right now as Crawford has taken the starting job but things could change if Felton is traded. Really depends on what you need. Rubio is a great assist/steals guy and he has been pretty solid from the FT line but not from 3pt.
Although the two combined players might be worth the gamble of trading away Rubio it may come down to who would you need to drop to make room for the 2nd player.
From the Rubio side - counter the trade by adding the player you would ultimately be dropping and see if you can get an upgrade from Felton or Matthews to sweeten the deal.