VFL form aside, Lennon has had 4 games now at AFL level this season (including 2 practice matches) and looked short of the level (all bar one or two good things he's done) but it's nowhere near enough.
Lloyd is the obvious replacement. Thought he was harshly treated after round 1 after the win against the Blues especially as he was our 2nd leading goal scorer for last year. Against the Blues he had 10 possessions, made 3 tackles and kicked a goal which is still more than Lennon has had in both his recent snr outings. Lloyd had 26 possessions in the VFL on the weekend apparently too. He is a proven goal kicker at AFL level. Very stiff not to be in the team IMO.
Other options would be Chol who copped an untimely knock last week. Garthwaite as has been mentioned is a possibility.
Markov is another option and the one I'd like to see. At 188cm is the same height as Lennon and was recruited as a forward. Whulst he's apparently looked a little lost in the VFL this year, it's worth trying him in the role Ben is currently playing. He could hardly go worse could he?
Menadue, C Ellis etc. are other possibilities that come into the 22 and switch things around a little.
There are other options to replace an under performing Lennon believe me.