Idler pulley missing?

[Richwilkins50]

hi all, just wondered if there’s meant to be a lower idler pulley here between the crank pulley and alternator pulley. There’s a hole which is threaded. The belt seems the slap about a lot in this area. It’s a 2004 1.9d with power steering, no air con. Also if there is, what is roughly the size of it so I know which one to buy. Many thanks 

[Image: 7AE0C25F-B881-47D7-9CC5-0E8901909CAF_zpsw8ugczf3.png]

[brodfather11]

A lot of us don't have access to photo bucket or want to and so cant see what you mean