Recently I needed to mount a remote backup drive via FTP in order to recover an account within WHM, I found the following package which is an FTP filesystem based in cURL and FUSE.
This worked effortlessly and is now my "goto" for FTP mounting.
The package is called CurlFtpFS and is available via Yum:
yum install curlftpfs
Mounting an FTP account is as easy as:
curlftpfs ftp://username:email@example.com /mnt/ftp-example
Note: CurlFtpFS hasn't been updated since 2008 and is presumed to be a dead project.