Water pump. Period. The ticking is you here is the shaft of the pullie/pump wobbling in its groove. There's a weep hole on the bottom for coolant to leak out of to indicate a seal is going. Yours is. Get a new one now before you overheat your engine and do much damage.
Mine did the same exact thing before the pump failed and I saw red...
T-red E0 SVT
ATS 17x7.5 Comp Lites, 215/45/17 Falken 512s, Ausi Bar, Boxed subframe, Poli all around, Warmonger's Opt Y, Opt TB, AFE, DMD, NGK's, Bendix Ti, Alpine, Polk, Mobil-1 0W-40, Redline MTL.
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