He is a more than an adequate as back up striker, especially when you consider even your average forward coming in to compete for a starting place will cost us in transfer fee.
It makes more sense to sell Beto and get DCL to sign a deal. Then...
Id keep Beto unless he's unhappy.
Personally think getting rid of all 3 makes a striker situation worse. Brining in 1 quality striker who you put all the pressure only gets you so far.
The other issue is goals from other areas of the pitch
If you got DCL to sign for say £60 k per week as a bench option and replaced Beto with Delap then I'd be all in favour but let's be honest both of those 2 things happening are unlikely.
Broja has been a waste of a loan space and a waste of time. Beto at times is a good finisher, 2 minutes later its looks like he has never played football before in his life.