After months of circling President Donald Trump during NFL depositions and discovery, Colin Kaepernick’s lawyers are expected to force Trump directly into the ongoing legal battle between the quarterback and league.

Kaepernick’s legal team is expected to seek federal subpoenas in the coming weeks to compel testimony from Trump, Vice President Mike Pence and other officials familiar with the president’s agenda on protesting NFL players, sources with knowledge of the quarterback’s collusion case against the NFL told Yahoo Sports.

The aim will be a dive into the administration’s political involvement with the NFL during Kaepernick’s free agency and the league’s handling of player protests, sources said. This after recent disclosures that multiple owners had direct talks with Trump about players kneeling during the national anthem. The content of those conversations between Trump and owners – as well as any forms of pressure directed at the league by the administration – are expected to shape the requests to force the testimony of Trump, Pence and other affiliated officials, sources said.

What has to happen for Trump to be subpoenaed?

Due to the nature of the rules in collective bargaining grievances, reeling in sworn testimony from the political sector will create at least one additional hurdle for Kaepernick’s camp. The quarterback’s legal team first must notify the system arbitrator of the need for targeted depositions beyond the boundaries of the agreement between the NFL and the player’s union. That would entail presenting a detailed argument to the system arbitrator overseeing the grievance, spelling out the relevance and impact that testimony from Trump or others could have on the grievance. If the arbitrator rules the testimony would be justifiable, that would open the door for Kaepernick’s attorneys to seek the subpoenas in a district court under the Federal Arbitration Act.

That’s also where the process would get more complicated and contentious.

View photos This Jan. 1, 2017, file photo shows former 49ers quarterback Colin Kaepernick speaking at a news conference. (AP) More

Should the system arbitrator and a federal judge find there is a basis to force Trump or others to sit for depositions, it would raise an argument over whether the president can actually be compelled by the courts to sit for a deposition. Trump could choose to ignore the order or simply decline, leaving it up to the justice system to enforce the subpoena.

Whether that would ever happen is a significant matter of debate.

Trump’s lawyers already fighting subpoenas in Mueller case

Multiple media outlets have reported Trump’s lawyers have already argued to special counsel Robert Mueller that the president couldn’t be compelled to comply with a criminal subpoena in the Russian collusion probe. It stands to reason if Trump would refuse to sit for a deposition in an investigation by the U.S. Department of Justice, he’s also likely to refuse to comply with a subpoena from a district court stemming from Kaepernick’s arbitration case.

Complicating matters further? Even if Trump was attracted to lock horns more directly with Kaepernick, doing so in a deposition could potentially expose the president legally if it is found he somehow bore responsibility for NFL owners refusing to offer Kaepernick a job.

Still, there is also a flip side for Trump, whose head-on verbal barrage against the NFL over protesting players has been a red-meat issue politically, stoking his base and creating a staple talking point he has continually revisited. In theory, taking part in the Kaepernick case would give him the opportunity to air his thoughts about the quarterback face-to-face in a deposition – much the same way multiple NFL owners have done in the process. It would also offer Trump fertile material for his steady diet of social media and “Fox & Friends” appearances, which can’t be discounted.