Here are some well adapted loaders for Antonio Carraro tractors having the bidirectional feature like your 4400
https://www.youtube.com/watch?v=mUReJJnTSrc
Antonio Carraro Ttr 4400 Reversible Tractor With Sigma 4 Rear Loader
Request Rejected
A front end type loader on an Antonio Carraro 4400:
https://www.youtube.com/watch?v=f2llN_Ellzg
A rear end loader offers several advantages:
1. the load is close to the rear tires and the heavier front end with engine, radiator and its longer lever arm provides a weight offsetting advantage.
2. a three point hitch implement is quicker putting on and taking off.
3. a rear loader does not lift as high as a traditional front end loader and thus has less roll over risk when both loaders are at maximum elevation.
The biggest disadvantage to a rear end loader:
A three point loader has shorter lift arms and does not elevate as high as a traditional front end loader.