ESPN does not enable you to trade for a player on someone else's IR and then add him to your own. ESPN will not allow the transaction to be proposed. You can't reportedly offer a deal involving an IR player until you first activate him. Then, he can be traded.
The answer is yes, they can be traded but it's unlikely anyone will want them. In order for this to happen you would need to clear up space on your roster by trading away other players. Once that is done you can trade for an injured player from another team. He will be placed on injured reserve while his team decides what to do with him. If they don't use him this season he will cost $1 million against their salary cap. If they do decide to keep him he can be signed to a new contract at any time before April 1st. At that point his old contract will be removed from the books.
In most cases, teams are trying to win now so they aren't going to want to wait around for a player to recover. This means you probably won't get much help in clearing space if you try to trade for an injured player.
IR rules were put into place because it allows teams to get rid of underperforming players and make room for incoming recruits. This is particularly important for college football programs which can't afford to miss any games due to injury.
On the ESPN Fantasy App, Accepting a Trade
Before you can move the now-healthy player off the IR, you must first clear up a roster position. Your claims will be processed normally if you have a player who has just been upgraded from "O" or "IR" to "QUESTIONABLE" or "DOUBTFUL." These are the only cases where a player can be removed from one of these categories.
The now-healthy player cannot return until it is confirmed that he won't need additional time to recover from his injury. If it is determined that the player can return to action before then, he will be placed back on the active roster.
In order for a player to be returned from IR, the team needs to make a spot on its regular-season roster by trading away another player or using one of its two exclusive claims on daydream players. The now-healthy player can be claimed once both of these processes have taken place.
On the ESPN Fantasy App, propose a trade. Kristofferson appears to have taken his own liberties, altering McKee to McGee and inventing a road song narrative about a pair of travelers who became estranged. In Joplin's rendition, she changed Bobby's gender and made him a guy. Eden recalls Kristofferson and Foster coming into the office to sing her the song.
On the ESPN Fantasy App, Accepting a Trade Go to the home page of your team. Tap the clock icon next to your team's name. From this screen, you can accept or deny the deal. If you accept the trade, the players involved in the trade will be notified that it has been accepted.
The user's roster is NOT invalid if a player in the IR spot has their status changed from OUT or IR to QUESTIONABLE or DOUBTFUL. Those players can stay in that IR position, and the user can make claims, add players, and change their lineups as they see fit. When a player's status changes back to healthy or lost, the user will no longer be able to make claims or changes to their lineup for that game.
If a player remains on IR after its expiration, then the player will be eligible to return to action during Week 16 of the season. If the team wants to use up its exclusive rights period before then, it can do so by placing the player on disabled list. This would also allow the team to activate the player at any time during the season prior to Week 16 without having him sit out another week.
For example, let's say that we have a league where there are only two teams. Team A puts a player on injured reserve with injury designation "knee". After one week, the player's status is changed to questionable instead of active/inactive. At the end of the second week, his status is still questionable but the deadline to put a player on injured reserve has passed. The third week, the player's status is again changed to inactive and he cannot play in any games this season. Since there are only two teams, there can't be any disputes about which ones got to play first.