The Cleveland Browns are entering the 2019 campaign full of talent and with high expectations, which is something we are not accustomed to saying about the Browns.

Thanks to a busy offseason in which Cleveland has landed the likes of Odell Beckham Jr., Kareem Hunt, Olivier Vernon, and Sheldon Richardson, there is a whole lot of hype surrounding the Browns heading into this season.

But it's not all about Cleveland's star power.

There are numerous other players on the Browns' roster who could make a big impact in 2019, and they can get started on doing that by having an impressive training camp.

Here are three players who have a lot to gain this summer:

David Njoku, Browns

3. David Njoku

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While Beckham and Jarvis Landry are the primary targets for Baker Mayfield in the passing game, there is still some excitement surrounding tight end David Njoku, as many are wondering what this new offense has in store for him.

So, it's not like Njoku is a no-name on the come-up. People know who he is.

However, I still feel like not enough people are paying attention to the potential impact he could have on Cleveland's offense, as he is an athletic freak of a tight end who can both stretch the field and represent a security blanket over the middle of the field for Mayfield with Beckham and Landry are occupying multiple defenders.

Njoku may very well be the X-factor for the Browns offense, and a good training camp would go a long way in helping him assert himself as a major cog in the system.

Greedy Williams, Browns

2. Greedy Williams

When the Browns drafted Greedy Williams in the second round, he declared that Cleveland was going to the Super Bowl and was promptly ripped for it by just about everyone.

Now, Williams has floated back down to earth and seems focused on earning himself a significant role in the Browns' secondary.

At the moment, Williams does not have a guaranteed starting job alongside Denzel Ward, as both Terrance Mitchell and T.J. Carrie are also battling for that spot, and Mitchell may even have the edge.

That's why an impressive training camp will be absolutely paramount for Williams if he wants to nab one of the two starting roles at cornerback heading into 2019. He is certainly talented enough for it; he needs to prove it.

Antonio Callaway, Browns

1. Antonio Callaway

Wait; the Browns are going to need a No. 3 receiver?

You may have forgotten that Cleveland will have a No. 3 guy as a result of all of the hoopla surrounding Beckham and Landry, but the Browns are certainly going to require some production from that third slot.

Lost in all of the talk about Cleveland's top two receivers is how solid of a rookie campaign Antonio Callaway had in 2018, as the former fourth-round pick out of Florida hauled in 43 receptions for 586 yards and five touchdowns.

He will be battling with 24-year-old wideout Rashard Higgins for that role, and while I could also easily list Higgins on this list, as well, it's hard to ignore just how good Callaway looked in one season.

Those two will be duking it out for the No. 3 receiver role, and don't be surprised if Callaway has a monster training camp and preseason in order to solidify himself for that slot.